stasvinokur/cve-and-cwe-dataset-1999-2025 huggingface dataset:
CVE-2013-4553 (severity: MEDIUM, weakness: CWE-119)
The XEN_DOMCTL_getmemlist hypercall in Xen 3.4.x through 4.3.x (possibly 4.3.1) does not always obtain the page_alloc_lock and mm_rwlock in the same order, which allows local guest administrators to cause a denial of service (host deadlock).
CVE-2013-4554 (severity: MEDIUM, weakness: CWE-264)
Xen 3.0.3 through 4.1.x (possibly 4.1.6.1), 4.2.x (possibly 4.2.3), and 4.3.x (possibly 4.3.1) does not properly prevent access to hypercalls, which allows local guest users to gain privileges via a crafted application running in ring 1 or 2.
CVE-2013-4555 (severity: MEDIUM, weakness: CWE-352)
Cross-site request forgery (CSRF) vulnerability in ecrire/action/logout.php in SPIP before 2.1.24 allows remote attackers to hijack the authentication of arbitrary users for requests that logout the user via unspecified vectors.
CVE-2013-4556 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in the author page (prive/formulaires/editer_auteur.php) in SPIP before 2.1.24 and 3.0.x before 3.0.12 allows remote attackers to inject arbitrary web script or HTML via the url_site parameter.
CVE-2013-4557 (severity: HIGH, weakness: CWE-94)
The Security Screen (_core_/securite/ecran_securite.php) before 1.1.8 for SPIP, as used in SPIP 3.0.x before 3.0.12, allows remote attackers to execute arbitrary PHP via the connect parameter.
CVE-2013-4558 (severity: LOW, weakness: CWE-20)
The get_parent_resource function in repos.c in mod_dav_svn Apache HTTPD server module in Subversion 1.7.11 through 1.7.13 and 1.8.1 through 1.8.4, when built with assertions enabled and SVNAutoversioning is enabled, allows remote attackers to cause a denial of service (assertion failure and Apache process abort) via a non-canonical URL in a request, as demonstrated using a trailing /.
CVE-2013-4559 (severity: HIGH, weakness: CWE-264)
lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple calls to the clone function that cause setuid to fail when the user process limit is reached.
CVE-2013-4560 (severity: MEDIUM, weakness: CWE-416)
Use-after-free vulnerability in lighttpd before 1.4.33 allows remote attackers to cause a denial of service (segmentation fault and crash) via unspecified vectors that trigger FAMMonitorDirectory failures.
CVE-2013-4561 (severity: CRITICAL, weakness: CWE-377)
In a openshift node, there is a cron job to update mcollective facts that mishandles a temporary file. This may lead to loss of confidentiality and integrity.
CVE-2013-4562 (severity: MEDIUM, weakness: CWE-352)
The omniauth-facebook gem 1.4.1 before 1.5.0 does not properly store the session parameter, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks via the state parameter.
CVE-2013-4563 (severity: HIGH, weakness: CWE-189)
The udp6_ufo_fragment function in net/ipv6/udp_offload.c in the Linux kernel through 3.12, when UDP Fragmentation Offload (UFO) is enabled, does not properly perform a certain size comparison before inserting a fragment header, which allows remote attackers to cause a denial of service (panic) via a large IPv6 UDP packet, as demonstrated by use of the Token Bucket Filter (TBF) queueing discipline.
CVE-2013-4564 (severity: MEDIUM, weakness: CWE-189)
Libreswan 3.6 allows remote attackers to cause a denial of service (crash) via a small length value and (1) no version or (2) an invalid major number in an IKE packet.
CVE-2013-4565 (severity: MEDIUM, weakness: CWE-119)
Heap-based buffer overflow in the __OLEdecode function in ppthtml 0.5.1 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted .ppt file.
CVE-2013-4566 (severity: MEDIUM, weakness: CWE-264)
mod_nss 1.0.8 and earlier, when NSSVerifyClient is set to none for the server/vhost context, does not enforce the NSSVerifyClient setting in the directory context, which allows remote attackers to bypass intended access restrictions.
CVE-2013-4567 (severity: MEDIUM, weakness: NVD-CWE-Other)
Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via a \b (backspace) character in CSS.
CVE-2013-4568 (severity: MEDIUM, weakness: NVD-CWE-Other)
Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via certain non-ASCII characters in CSS, as demonstrated using variations of "expression" containing (1) full width characters or (2) IPA extensions, which are converted and rendered by Internet Explorer.
CVE-2013-4569 (severity: MEDIUM, weakness: CWE-200)
The CleanChanges extension for MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3, when "Group changes by page in recent changes and watchlist" is enabled, allows remote attackers to obtain sensitive information (revision-deleted IPs) via the Recent Changes page.
CVE-2013-4570 (severity: MEDIUM, weakness: NVD-CWE-Other)
The zend_inline_hash_func function in php-luasandbox in the Scribuntu extension for MediaWiki before 1.19.10, 1.2x before 1.21.4, and 1.22.x before 1.22.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via vectors related to converting Lua data structures to PHP, as demonstrated by passing { [{}] = 1 } to a module function.
CVE-2013-4571 (severity: HIGH, weakness: CWE-119)
Buffer overflow in php-luasandbox in the Scribuntu extension for MediaWiki before 1.19.10, 1.2x before 1.21.4, and 1.22.x before 1.22.1 has unspecified impact and remote vectors.
CVE-2013-4572 (severity: HIGH, weakness: CWE-384)
The CentralNotice extension for MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 sets the Cache-Control header to cache session cookies when a user is autocreated, which allows remote attackers to authenticate as the created user.
CVE-2013-4573 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in the ZeroRatedMobileAccess extension for MediaWiki 1.19.x before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to inject arbitrary web script or HTML via the "to" parameter to index.php.
CVE-2013-4574 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in the TimeMediaHandler extension for MediaWiki before 1.19.10, 1.2x before 1.21.4, and 1.22.x before 1.22.1 allows remote attackers to inject arbitrary web script or HTML via vectors related to videos.
CVE-2013-4575 (severity: HIGH, weakness: CWE-119)
Heap-based buffer overflow in the utility program in the Linux agent in Symantec Backup Exec 2010 R3 before 2010 R3 SP3 and 2012 before SP2 allows remote attackers to cause a denial of service (agent crash) or possibly execute arbitrary code via unspecified vectors.
CVE-2013-4576 (severity: LOW, weakness: CWE-255)
GnuPG 1.x before 1.4.16 generates RSA keys using sequences of introductions with certain patterns that introduce a side channel, which allows physically proximate attackers to extract RSA keys via a chosen-ciphertext attack and acoustic cryptanalysis during decryption. NOTE: applications are not typically expected to protect themselves from acoustic side-channel attacks, since this is arguably the responsibility of the physical device. Accordingly, issues of this type would not normally receive a CVE identifier. However, for this issue, the developer has specified a security policy in which GnuPG should offer side-channel resistance, and developer-specified security-policy violations are within the scope of CVE.
CVE-2013-4577 (severity: LOW, weakness: CWE-264)
A certain Debian patch for GNU GRUB uses world-readable permissions for grub.cfg, which allows local users to obtain password hashes, as demonstrated by reading the password_pbkdf2 directive in the file.
CVE-2013-4578 (severity: MEDIUM, weakness: CWE-74)
jarsigner in OpenJDK and Oracle Java SE before 7u51 allows remote attackers to bypass a code-signing protection mechanism and inject unsigned bytecode into a signed JAR file by leveraging improper file validation.
CVE-2013-4579 (severity: MEDIUM, weakness: CWE-310)
The ath9k_htc_set_bssid_mask function in drivers/net/wireless/ath/ath9k/htc_drv_main.c in the Linux kernel through 3.12 uses a BSSID masking approach to determine the set of MAC addresses on which a Wi-Fi device is listening, which allows remote attackers to discover the original MAC address after spoofing by sending a series of packets to MAC addresses with certain bit manipulations.
CVE-2013-4580 (severity: MEDIUM, weakness: CWE-287)
GitLab before 5.4.2, Community Edition before 6.2.4, and Enterprise Edition before 6.2.1, when using a MySQL backend, allows remote attackers to impersonate arbitrary users and bypass authentication via unspecified API calls.
CVE-2013-4581 (severity: MEDIUM, weakness: CWE-94)
GitLab 5.0 before 5.4.2, Community Edition before 6.2.4, Enterprise Edition before 6.2.1 and gitlab-shell before 1.7.8 allows remote attackers to execute arbitrary code via a crafted change using SSH.
CVE-2013-4582 (severity: MEDIUM, weakness: CWE-829)
The (1) create_branch, (2) create_tag, (3) import_project, and (4) fork_project functions in lib/gitlab_projects.rb in GitLab 5.0 before 5.4.2, Community Edition before 6.2.4, Enterprise Edition before 6.2.1 and gitlab-shell before 1.7.8 allows remote authenticated users to include information from local files into the metadata of a Git repository via the web interface.
CVE-2013-4583 (severity: HIGH, weakness: CWE-269)
The parse_cmd function in lib/gitlab_shell.rb in GitLab 5.0 before 5.4.2, Community Edition before 6.2.4, and Enterprise Edition before 6.2.1 and gitlab-shell before 1.7.8 allows remote authenticated users to gain privileges and clone arbitrary repositories.
CVE-2013-4584 (severity: MEDIUM, weakness: CWE-755)
Perdition before 2.2 may have weak security when handling outbound connections, caused by an error in the STARTTLS IMAP and POP server. ssl_outgoing_ciphers not being applied to STARTTLS connections
CVE-2013-4587 (severity: HIGH, weakness: CWE-20)
Array index error in the kvm_vm_ioctl_create_vcpu function in virt/kvm/kvm_main.c in the KVM subsystem in the Linux kernel through 3.12.5 allows local users to gain privileges via a large id value.
CVE-2013-4588 (severity: HIGH, weakness: CWE-119)
Multiple stack-based buffer overflows in net/netfilter/ipvs/ip_vs_ctl.c in the Linux kernel before 2.6.33, when CONFIG_IP_VS is used, allow local users to gain privileges by leveraging the CAP_NET_ADMIN capability for (1) a getsockopt system call, related to the do_ip_vs_get_ctl function, or (2) a setsockopt system call, related to the do_ip_vs_set_ctl function.
CVE-2013-4589 (severity: MEDIUM, weakness: NVD-CWE-Other)
The ExportAlphaQuantumType function in export.c in GraphicsMagick before 1.3.18 might allow remote attackers to cause a denial of service (crash) via vectors related to exporting the alpha of an 8-bit RGBA image.
CVE-2013-4590 (severity: MEDIUM, weakness: CWE-200)
Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 allows attackers to obtain "Tomcat internals" information by leveraging the presence of an untrusted web application with a context.xml, web.xml, *.jspx, *.tagx, or *.tld XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.
CVE-2013-4591 (severity: MEDIUM, weakness: CWE-119)
Buffer overflow in the __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the Linux kernel before 3.7.2 allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a getxattr system call for the system.nfs4_acl extended attribute of a pathname on an NFSv4 filesystem.
CVE-2013-4592 (severity: MEDIUM, weakness: CWE-399)
Memory leak in the __kvm_set_memory_region function in virt/kvm/kvm_main.c in the Linux kernel before 3.9 allows local users to cause a denial of service (memory consumption) by leveraging certain device access to trigger movement of memory slots.
CVE-2013-4593 (severity: HIGH, weakness: CWE-287)
RubyGem omniauth-facebook has an access token security vulnerability
CVE-2013-4594 (severity: MEDIUM, weakness: CWE-287)
The Payment for Webform module 7.x-1.x before 7.x-1.5 for Drupal does not restrict access by anonymous users, which allows remote anonymous users to use the payment of other anonymous users when submitting a form that requires payment.
CVE-2013-4595 (severity: MEDIUM, weakness: CWE-310)
The Secure Pages module 6.x-2.x before 6.x-2.0 for Drupal does not properly match URLs, which causes HTTP to be used instead of HTTPS and makes it easier for remote attackers to obtain sensitive information via a crafted web page.
CVE-2013-4596 (severity: MEDIUM, weakness: CWE-264)
The Node Access Keys module 7.x-1.x before 7.x-1.1 for Drupal does not properly check permissions, which allows remote attackers to bypass access restrictions via a node listing.
CVE-2013-4597 (severity: MEDIUM, weakness: CWE-264)
The Revisioning module 7.x-1.x before 7.x-1.6 for Drupal does not properly check node access permissions for content marked unpublished by the Scheduled module, which allows remote authenticated users to obtain sensitive information via unspecified vectors.
CVE-2013-4598 (severity: MEDIUM, weakness: CWE-264)
The Groups, Communities and Co (GCC) module 7.x-1.x before 7.x-1.1 for Drupal does not properly check permission, which allows remote attackers to access the configuration pages via unspecified vectors.
CVE-2013-4599 (severity: MEDIUM, weakness: CWE-399)
The Misery module 6.x-2.x before 6.x-2.5 and 7.x-2.x before 7.x-2.2 for Drupal, when the "delay misery" configuration is set to a high value, allows remote attackers to cause a denial of service (process consumption) via multiple requests.
CVE-2013-4600 (severity: MEDIUM, weakness: CWE-79)
Multiple cross-site scripting (XSS) vulnerabilities in Alkacon OpenCms before 8.5.2 allow remote attackers to inject arbitrary web script or HTML via the (1) title parameter to system/workplace/views/admin/admin-main.jsp or the (2) requestedResource parameter to system/login/index.html.
CVE-2013-4602 (severity: MEDIUM, weakness: CWE-400)
A Denial of Service (infinite loop) vulnerability exists in Avira AntiVir Engine before 8.2.12.58 via an unspecified function in the PDF Scanner Engine.
CVE-2013-4604 (severity: MEDIUM, weakness: CWE-264)
Fortinet FortiOS before 5.0.3 on FortiGate devices does not properly restrict Guest capabilities, which allows remote authenticated users to read, modify, or delete the records of arbitrary users by leveraging the Guest role.
CVE-2013-4608 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in REDCap before 5.0.6 allows remote attackers to inject arbitrary web script or HTML via vectors involving the Graphical Data View & Descriptive Stats page.
CVE-2013-4609 (severity: MEDIUM, weakness: CWE-264)
REDCap before 5.0.4 and 5.1.x before 5.1.3 does not reject certain undocumented syntax within branching logic and calculations, which allows remote authenticated users to bypass intended access restrictions via (1) the Online Designer or (2) the Data Dictionary upload, as demonstrated by an eval call.
CVE-2013-4610 (severity: HIGH, weakness: NVD-CWE-Other)
Unspecified vulnerability in the Data Search utility in data-entry forms in REDCap before 5.0.3 and 5.1.x before 5.1.2 has unknown impact and remote attack vectors.
CVE-2013-4611 (severity: HIGH, weakness: NVD-CWE-Other)
Multiple unspecified vulnerabilities in REDCap before 5.1.1 allow remote attackers to have an unknown impact via vectors involving (1) the Online Designer page or (2) the Manage Survey Participants page.
CVE-2013-4612 (severity: MEDIUM, weakness: CWE-79)
Multiple cross-site scripting (XSS) vulnerabilities in REDCap before 5.1.0 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors involving different modules.
CVE-2013-4613 (severity: HIGH, weakness: CWE-264)
The default configuration of the administrative interface on the Canon MG3100, MG5300, MG6100, MP495, MX340, MX870, MX890, MX920, and MX922 printers does not require authentication, which allows remote attackers to modify the configuration by visiting the Advanced page. NOTE: the vendor has apparently responded by stating "for user convenience, the default setting does not require a password. However, if a user has a particular concern about third parties accessing the user's home printer, the default setting can be changed to add a password."
CVE-2013-4614 (severity: LOW, weakness: CWE-255)
English/pages_MacUS/wls_set_content.html on the Canon MG3100, MG5300, MG6100, MP495, MX340, MX870, MX890, MX920, and MX922 printers shows the Wi-Fi PSK passphrase in cleartext, which allows physically proximate attackers to obtain sensitive information by reading the screen of an unattended workstation.
CVE-2013-4615 (severity: MEDIUM, weakness: CWE-20)
The Canon MG3100, MG5300, MG6100, MP495, MX340, MX870, MX890, MX920, and MX922 printers allow remote attackers to cause a denial of service (device hang) via a crafted LAN_TXT24 parameter to English/pages_MacUS/cgi_lan.cgi followed by a direct request to English/pages_MacUS/lan_set_content.html. NOTE: the vendor has apparently responded by stating "Canon believes that its printers will not have to deal with unauthorized access to the network from an external location as long as the printers are used in a secured environment."
CVE-2013-4616 (severity: MEDIUM, weakness: CWE-255)
The WifiPasswordController generateDefaultPassword method in Preferences in Apple iOS 6 and earlier relies on the UITextChecker suggestWordInLanguage method for selection of Wi-Fi hotspot WPA2 PSK passphrases, which makes it easier for remote attackers to obtain access via a brute-force attack that leverages the insufficient number of possible passphrases.
CVE-2013-4617 (severity: MEDIUM, weakness: CWE-200)
Jahia xCM before 6.6.2 does not include the HTTPOnly flag in a Set-Cookie header for the JSESSIONID cookie, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie.
CVE-2013-4619 (severity: MEDIUM, weakness: CWE-89)
Multiple SQL injection vulnerabilities in OpenEMR 4.1.1 allow remote authenticated users to execute arbitrary SQL commands via the (1) start or (2) end parameter to interface/reports/custom_report_range.php, or the (3) form_newid parameter to custom/chart_tracker.php.
CVE-2013-4620 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in interface/main/onotes/office_comments_full.php in OpenEMR 4.1.1 allows remote attackers to inject arbitrary web script or HTML via the note parameter.
CVE-2013-4621 (severity: CRITICAL, weakness: CWE-287)
Magnolia CMS before 4.5.9 has multiple access bypass vulnerabilities
CVE-2013-4622 (severity: HIGH, weakness: CWE-255)
The 3G Mobile Hotspot feature on the HTC Droid Incredible has a default WPA2 PSK passphrase of 1234567890, which makes it easier for remote attackers to obtain access by leveraging a position within the WLAN coverage area.
CVE-2013-4623 (severity: MEDIUM, weakness: CWE-20)
The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.
CVE-2013-4624 (severity: MEDIUM, weakness: CWE-79)
Multiple cross-site scripting (XSS) vulnerabilities in Jahia xCM 6.6.1.0 before hotfix 7 allow remote attackers to inject arbitrary web script or HTML via (1) the site parameter to engines/manager.jsp, (2) the searchString parameter to administration/ in a search action, or the (3) username, (4) firstName, (5) lastName, (6) email, or (7) organization field to administration/ in a users action.
CVE-2013-4625 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in files/installer.cleanup.php in the Duplicator plugin before 0.4.5 for WordPress allows remote attackers to inject arbitrary web script or HTML via the package parameter.
CVE-2013-4626 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in the BackWPup plugin before 3.0.13 for WordPress allows remote attackers to inject arbitrary web script or HTML via the tab parameter to wp-admin/admin.php.
CVE-2013-4627 (severity: MEDIUM, weakness: NVD-CWE-Other)
Unspecified vulnerability in bitcoind and Bitcoin-Qt 0.8.x allows remote attackers to cause a denial of service (memory consumption) via a large amount of tx message data.
CVE-2013-4628 (severity: LOW, weakness: CWE-200)
The firewall module on the Huawei Quidway Service Process Unit (SPU) board S7700, S9300, and S9700 on Huawei Campus Switch devices allows remote authenticated users to obtain sensitive information from the high-priority security zone by leveraging access to the low-priority security zone.
CVE-2013-4629 (severity: HIGH, weakness: CWE-255)
The Huawei viewpoint VP9610 and VP9620 units for the Huawei Video Conference system do not update the Session ID upon successful establishment of a login session, which allows remote authenticated users to hijack sessions via an unspecified interception method.
CVE-2013-4630 (severity: HIGH, weakness: CWE-119)
Stack-based buffer overflow on Huawei AR 150, 200, 1200, 2200, and 3200 routers, when SNMPv3 debugging is enabled, allows remote attackers to execute arbitrary code via malformed SNMPv3 requests.
CVE-2013-4631 (severity: HIGH, weakness: CWE-119)
Huawei AR 150, 200, 1200, 2200, and 3200 routers, when SNMPv3 is enabled, allow remote attackers to cause a denial of service (device crash) via malformed SNMPv3 requests that leverage unspecified overflow issues.
CVE-2013-4632 (severity: HIGH, weakness: CWE-20)
The Huawei Access Router (AR) before V200R002SPC003 allows remote attackers to cause a denial of service (device reset) via a crafted field in a DHCP request, as demonstrated by a request from an IP phone.
CVE-2013-4633 (severity: HIGH, weakness: CWE-264)
Huawei Seco Versatile Security Manager (VSM) before V200R002C00SPC300 allows remote authenticated users to gain privileges via a certain change to a group configuration setting.
CVE-2013-4634 (severity: HIGH, weakness: CWE-89)
SQL injection vulnerability in the jQuery autocomplete for indexed_search (rzautocomplete) extension before 0.0.9 for TYPO3 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.
CVE-2013-4635 (severity: MEDIUM, weakness: CWE-189)
Integer overflow in the SdnToJewish function in jewish.c in the Calendar component in PHP before 5.3.26 and 5.4.x before 5.4.16 allows context-dependent attackers to cause a denial of service (application hang) via a large argument to the jdtojewish function.
CVE-2013-4636 (severity: MEDIUM, weakness: CWE-20)
The mget function in libmagic/softmagic.c in the Fileinfo component in PHP 5.4.x before 5.4.16 allows remote attackers to cause a denial of service (invalid pointer dereference and application crash) via an MP3 file that triggers incorrect MIME type detection during access to an finfo object.
CVE-2013-4649 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in DotNetNuke (DNN) before 6.2.9 and 7.x before 7.1.1 allows remote attackers to inject arbitrary web script or HTML via the __dnnVariable parameter to the default URI.
CVE-2013-4650 (severity: MEDIUM, weakness: CWE-264)
MongoDB 2.4.x before 2.4.5 and 2.5.x before 2.5.1 allows remote authenticated users to obtain internal system privileges by leveraging a username of __system in an arbitrary database.