alirezaaminzadeh/secembed-pairs huggingface dataset:
Query: patch priority for CVE-2015-5366
Matching passage: CVE-2015-5366. CWE: CWE-399. CVSS: 5.0. The (1) udp_recvmsg and (2) udpv6_recvmsg functions in the Linux kernel before 4.0.6 provide inappropriate -EAGAIN return values, which allows remote attackers to cause a denial of service (EPOLLET epoll application read outage) via an incorrect checksum in a UDP packet, a different vulnerability than CVE-2015-5364.
Near-miss passage: CVE-2015-5964. CWE: CWE-399. CVSS: 5.0. The (1) contrib.sessions.backends.base.SessionBase.flush and (2) cache_db.SessionStore.flush functions in Django 1.7.x before 1.7.10, 1.4.x before 1.4.22, and possibly other versions create empty sessions in certain circumstances, which allows remote attackers to cause a denial of service (session store consumption) via unspecified vectors.
Query: rule covering Detects using SettingSyncHost.exe to run hijacked binary
Matching passage: Sigma rule: Detects using SettingSyncHost.exe to run hijacked binary. Logsource: windows / process_creation. Rule: title: Using SettingSyncHost.exe as LOLBin id: b2ddd389-f676-4ac4-845a-e00781a48e5f status: test description: Detects using SettingSyncHost.exe to run hijacked binary references: - https://www.hexacorn.com/blog/2020/02/02/settingsynchost-exe-as-a-lolbin author: Anton Kutepov, oscd.community date: 2020-02-05 modified: 2021-11-27 tags: - attack.privilege-escalation - attack.persistence - attack.execution - attack.stealth - attack.t1574.008 logsource: category: process_creation product: windows detection: system_utility: Image|startswith: - C:\Windows\System32\ - C:\Windows\SysWOW64\ parent_is_settingsynchost: ParentCommandLine|contains|all: - cmd.exe /c - RoamDiag.cmd - -outputpath condition: not system_utility and parent_is_settingsynchost falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects execution of the Notepad++ updater (gup) to launch other commands or executables. Logsource: windows / process_creation. Rule: title: Arbitrary Binary Execution Using GUP Utility id: d65aee4d-2292-4cea-b832-83accd6cfa43 status: test description: Detects execution of the Notepad++ updater (gup) to launch other commands or executables references: - https://twitter.com/nas_bench/status/1535322445439180803 author: Nasreddine Bencherchali (Nextron Systems) date: 2022-06-10 modified: 2023-03-02 tags: - attack.execution logsource: category: process_creation product: windows detection: selection: ParentImage|endswith: \gup.exe Image|endswith: \explorer.exe filter: Image|endswith: \explorer.exe CommandLine|contains: \Notepad++\notepad++.exe filter_parent: ParentImage|contains: \Notepad++\updater\ filter_null: CommandLine: null condition: selection and not 1 of filter* falsepositives: - Other parent binaries using GUP not currently identified level: medium
Query: exploit D-Bus 1.4.x through 1.6.x before 1.6.30, 1.8.x before 1.8.16, and 1.9.x before 1.9.10 does not validate the source of ActivationFailure signals, which allows local users to cause a
Matching passage: CVE-2015-0245. CWE: CWE-362. CVSS: 1.899999976158142. D-Bus 1.4.x through 1.6.x before 1.6.30, 1.8.x before 1.8.16, and 1.9.x before 1.9.10 does not validate the source of ActivationFailure signals, which allows local users to cause a denial of service (activation failure error returned) by leveraging a race condition involving sending an ActivationFailure signal before systemd responds.
Near-miss passage: CVE-2015-8839. CWE: CWE-362. CVSS: 5.099999904632568. Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.
Query: CVE similar to CVE-2015-4480
Matching passage: CVE-2015-4480. CWE: CWE-189. CVSS: 9.300000190734863. Integer overflow in the stagefright::SampleTable::isValid function in libstagefright in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 allows remote attackers to execute arbitrary code via crafted MPEG-4 video data with H.264 encoding.
Near-miss passage: CVE-2015-6819. CWE: CWE-189. CVSS: 7.5. Multiple integer underflows in the ff_mjpeg_decode_frame function in libavcodec/mjpegdec.c in FFmpeg before 2.7.2 allow remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted MJPEG data.
Query: patch priority for CVE-2015-2646
Matching passage: CVE-2015-2646. CWE: UNKNOWN. CVSS: 4.300000190734863. Unspecified vulnerability in the Enterprise Manager for Oracle Database component in Oracle Enterprise Manager Grid Control EM Base Platform: 11.1.0.1; EM Plugin for DB: 12.1.0.5, 12.1.0.6, 12.1.0.7; EM DB Control: 11.1.0.7, 11.2.0.3, and 11.2.0.4 allows remote attackers to affect integrity via unknown vectors related to Content Management.
Near-miss passage: CVE-2015-0968. CWE: UNKNOWN. CVSS: 7.5. Unrestricted file upload vulnerability in admin/uploadImage.html in SearchBlox before 8.2 allows remote attackers to execute arbitrary code by uploading a file with an executable extension and the image/jpeg content type, a different vulnerability than CVE-2013-3590.
Query: patch priority for CVE-2015-0379
Matching passage: CVE-2015-0379. CWE: UNKNOWN. CVSS: 4.300000190734863. Unspecified vulnerability in the PeopleSoft Enterprise PeopleTools component in Oracle PeopleSoft Products 8.54 allows remote attackers to affect integrity via vectors related to PIA Core Technology.
Near-miss passage: CVE-2015-8427. CWE: UNKNOWN. CVSS: 10.0. Use-after-free vulnerability in Adobe Flash Player before 18.0.0.268 and 19.x and 20.x before 20.0.0.228 on Windows and OS X and before 11.2.202.554 on Linux, Adobe AIR before 20.0.0.204, Adobe AIR SDK before 20.0.0.204, and Adobe AIR SDK & Compiler before 20.0.0.204 allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2015-8048, CVE-2015-8049, CVE-2015-8050, CVE-2015-8055, CVE-2015-8056, CVE-2015-8057, CVE-2015-8058, CVE-2015-8059, CVE-2015-8061, CVE-2015-8062, CVE-2015-8063, CVE-2015-8064, CVE-2015-8065, CVE-2015-8066, CVE-2015-8067, CVE-2015-8068, CVE-2015-8069, CVE-2015-8070, CVE-2015-8071, CVE-2015-8401, CVE-2015-8402, CVE-2015-8403, CVE-2015-8404, CVE-2015-8405, CVE-2015-8406, CVE-2015-8410, CVE-2015-8411, CVE-2015-8412, CVE-2015-8413, CVE-2015-8414, CVE-2015-8420, CVE-2015-8421, CVE-2015-8422, CVE-2015-8423, CVE-2015-8424, CVE-2015-8425, CVE-2015-8426, CVE-2015-8428, CVE-2015-8429, CVE-2015-8430, CVE-2015-8431, CVE-2015-8432, CVE-2015-8433, CVE-2015-8434, CVE-2015-8435, CVE-2015-8436, CVE-2015-8437, CVE-2015-8441, CVE-2015-8442, CVE-2015-8447, CVE-2015-8448, CVE-2015-8449, CVE-2015-8450, CVE-2015-8452, and CVE-2015-8454.
Query: describe CVE-2015-0213
Matching passage: CVE-2015-0213. CWE: CWE-352. CVSS: 6.800000190734863. Multiple cross-site request forgery (CSRF) vulnerabilities in (1) editcategories.html and (2) editcategories.php in the Glossary module in Moodle through 2.5.9, 2.6.x before 2.6.7, 2.7.x before 2.7.4, and 2.8.x before 2.8.2 allow remote attackers to hijack the authentication of unspecified victims.
Near-miss passage: CVE-2015-4391. CWE: CWE-352. CVSS: 6.800000190734863. Cross-site request forgery (CSRF) vulnerability in the CiviCRM private report module 6.x-1.x before 6.x-1.2 and 7.x-1.x before 7.x-1.3 for Drupal allows remote attackers to hijack the authentication of users for requests that delete reports via unspecified vectors.
Query: playbook for alert: Suspicious Audio Capture execution detected on endpoint
Matching passage: Playbook for T1123 Audio Capture. 1) Validate alert telemetry against T1123. 2) Scope affected hosts and accounts. 3) Contain by isolating endpoint / disabling account if confirmed. 4) Hunt for related tactics: collection. 5) Eradicate persistence and recover. Reference detection notes: An adversary can leverage a computer's peripheral devices (e.g., microphones and webcams) or applications (e.g., voice and video call services) to capture audio recordings for the purpose of listening into sensitive conversations to gather information.(Citation: ESET Attor Oct 2019) Malware or scripts may be used to interact with the devices through an available API provided by the operating syste
Near-miss passage: Playbook for T1560.001 Archive via Utility. Different response path focused on collection.
Query: CVE similar to CVE-2015-5087
Matching passage: CVE-2015-5087. CWE: CWE-119. CVSS: 10.0. Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC Classic before 2015.006.30060, and Acrobat and Acrobat Reader DC Continuous before 2015.008.20082 on Windows and OS X allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2015-3095, CVE-2015-5094, CVE-2015-5100, CVE-2015-5102, CVE-2015-5103, CVE-2015-5104, and CVE-2015-5115.
Near-miss passage: CVE-2015-7696. CWE: CWE-119. CVSS: 6.800000190734863. Info-ZIP UnZip 6.0 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) or possibly execute arbitrary code via a crafted password-protected ZIP archive, possibly related to an Extra-Field size value.
Query: patch priority for CVE-2015-1713
Matching passage: CVE-2015-1713. CWE: CWE-264. CVSS: 6.800000190734863. Microsoft Internet Explorer 11 allows remote attackers to gain privileges via a crafted web site, aka "Internet Explorer Elevation of Privilege Vulnerability."
Near-miss passage: CVE-2015-6640. CWE: CWE-264. CVSS: 7.800000190734863. The prctl_set_vma_anon_name function in kernel/sys.c in Android before 5.1.1 LMY49F and 6.0 before 2016-01-01 does not ensure that only one vma is accessed in a certain update action, which allows attackers to gain privileges or cause a denial of service (vma list corruption) via a crafted application, aka internal bug 20017123.
Query: detection rule: Detects the execution of whoami.exe with suspicious parent processes.
Matching passage: Sigma rule: Detects the execution of whoami.exe with suspicious parent processes.. Logsource: windows / process_creation. Rule: title: Whoami.EXE Execution Anomaly id: 8de1cbe8-d6f5-496d-8237-5f44a721c7a0 status: test description: Detects the execution of whoami.exe with suspicious parent processes. references: - https://brica.de/alerts/alert/public/1247926/agent-tesla-keylogger-delivered-inside-a-power-iso-daa-archive/ - https://app.any.run/tasks/7eaba74e-c1ea-400f-9c17-5e30eee89906/ - https://www.youtube.com/watch?v=DsJ9ByX84o4&t=6s author: Florian Roth (Nextron Systems) date: 2021-08-12 modified: 2025-03-06 tags: - attack.discovery - attack.t1033 - car.2016-03-001 logsource: category: process_creation product: windows detection: selection: - Image|endswith: \whoami.exe - OriginalFileName: whoami.exe filter_main_known_parents: ParentImage|endswith: - \cmd.exe - \powershell_ise.exe - \powershell.exe - \pwsh.exe filter_optional_ms_monitoring_agent: ParentImage|endswith: :\Program Files\Microsoft Monitoring Agent\Agent\MonitoringHost.exe filter_main_parent_null: ParentImage: null filter_main_parent_empty: ParentImage: - '' - '-' condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Admin activity - Scripts and administrative tools used in the monitored environment - Monitoring activity level: medium
Near-miss passage: Sigma rule: Detects the execution of Xwizard tool from a non-default directory. When executed from a non-default directory, this uti. Logsource: windows / process_creation. Rule: title: Xwizard.EXE Execution From Non-Default Location id: 193d5ccd-6f59-40c6-b5b0-8e32d5ddd3d1 status: test description: 'Detects the execution of Xwizard tool from a non-default directory. When executed from a non-default directory, this utility can be abused in order to side load a custom version of "xwizards.dll". ' references: - https://lolbas-project.github.io/lolbas/Binaries/Xwizard/ - http://www.hexacorn.com/blog/2017/07/31/the-wizard-of-x-oppa-plugx-style/ author: Christian Burkard (Nextron Systems) date: 2021-09-20 modified: 2024-08-15 tags: - attack.privilege-escalation - attack.persistence - attack.execution - attack.stealth - attack.t1574.001 logsource: category: process_creation product: windows detection: selection: - Image|endswith: \xwizard.exe - OriginalFileName: xwizard.exe filter_main_legit_location: Image|startswith: - C:\Windows\System32\ - C:\Windows\SysWOW64\ - C:\Windows\WinSxS\ condition: selection and not 1 of filter_main_* falsepositives: - Windows installed on non-C drive level: high
Query: vulnerability: WebKit, as used in Apple Safari before 9.0.1 and iTunes before 12.3.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and applica
Matching passage: CVE-2015-7013. CWE: CWE-119. CVSS: 6.800000190734863. WebKit, as used in Apple Safari before 9.0.1 and iTunes before 12.3.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2015-10-21-3 and APPLE-SA-2015-10-21-5.
Near-miss passage: CVE-2015-6082. CWE: CWE-119. CVSS: 9.300000190734863. Microsoft Internet Explorer 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability," a different vulnerability than CVE-2015-6068, CVE-2015-6072, CVE-2015-6073, CVE-2015-6075, CVE-2015-6077, CVE-2015-6079, and CVE-2015-6080.
Query: vulnerability: SQL injection vulnerability in the CMSJunkie J-ClassifiedsManager component for Joomla! allows remote attackers to execute arbitrary SQL commands via the id parameter in a viewad t
Matching passage: CVE-2015-1477. CWE: CWE-89. CVSS: 7.5. SQL injection vulnerability in the CMSJunkie J-ClassifiedsManager component for Joomla! allows remote attackers to execute arbitrary SQL commands via the id parameter in a viewad task to classifieds/offerring-ads.
Near-miss passage: CVE-2015-7877. CWE: CWE-89. CVSS: 9.800000190734863. Multiple SQL injection vulnerabilities in the User Dashboard module 7.x before 7.x-1.4 for Drupal allow remote attackers to execute arbitrary SQL commands via unspecified vectors.
Query: Sigma YAML for windows / create_remote_thread
Matching passage: Sigma rule: Detects remote thread creation in "KeePass.exe" which could indicates potential password dumping activity. Logsource: windows / create_remote_thread. Rule: title: Remote Thread Created In KeePass.EXE id: 77564cc2-7382-438b-a7f6-395c2ae53b9a status: test description: Detects remote thread creation in "KeePass.exe" which could indicates potential password dumping activity references: - https://www.cisa.gov/uscert/ncas/alerts/aa20-259a - https://github.com/denandz/KeeFarce - https://github.com/GhostPack/KeeThief author: Timon Hackenjos date: 2022-04-22 modified: 2023-05-05 tags: - attack.credential-access - attack.t1555.005 logsource: product: windows category: create_remote_thread detection: selection: TargetImage|endswith: \KeePass.exe condition: selection falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects usage of the WMI class "Win32_NTEventlogFile" in a potentially suspicious way (delete, backup, change permission. Logsource: windows / ps_script. Rule: title: Potentially Suspicious Call To Win32_NTEventlogFile Class - PSScript id: e2812b49-bae0-4b21-b366-7c142eafcde2 status: test description: Detects usage of the WMI class "Win32_NTEventlogFile" in a potentially suspicious way (delete, backup, change permissions, etc.) from a PowerShell script references: - https://learn.microsoft.com/en-us/previous-versions/windows/desktop/legacy/aa394225(v=vs.85) author: Nasreddine Bencherchali (Nextron Systems) date: 2023-07-13 tags: - attack.defense-impairment logsource: category: ps_script product: windows definition: bade5735-5ab0-4aa7-a642-a11be0e40872 detection: selection_class: ScriptBlockText|contains: Win32_NTEventlogFile selection_function: ScriptBlockText|contains: - .BackupEventlog( - .ChangeSecurityPermissions( - .ChangeSecurityPermissionsEx( - .ClearEventLog( - .Delete( - .DeleteEx( - .Rename( - .TakeOwnerShip( - .TakeOwnerShipEx( condition: all of selection_* falsepositives: - Legitimate administration and backup scripts level: medium
Query: patch priority for CVE-2015-1101
Matching passage: CVE-2015-1101. CWE: UNKNOWN. CVSS: 6.900000095367432. The kernel in Apple iOS before 8.3, Apple OS X before 10.10.3, and Apple TV before 7.2 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.
Near-miss passage: CVE-2015-4441. CWE: UNKNOWN. CVSS: 6.800000190734863. Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC Classic before 2015.006.30060, and Acrobat and Acrobat Reader DC Continuous before 2015.008.20082 on Windows and OS X allow attackers to bypass JavaScript API execution restrictions via unspecified vectors, a different vulnerability than CVE-2015-4435, CVE-2015-4438, CVE-2015-4445, CVE-2015-4447, CVE-2015-4451, CVE-2015-4452, CVE-2015-5085, and CVE-2015-5086.
Query: CVE similar to CVE-2015-3286
Matching passage: CVE-2015-3286. CWE: CWE-119. CVSS: 4.599999904632568. Buffer overflow in the Solaris kernel extension in OpenAFS before 1.6.13 allows local users to cause a denial of service (panic or deadlock) or possibly have other unspecified impact via a large group list when joining a PAG.
Near-miss passage: CVE-2015-6633. CWE: CWE-119. CVSS: 9.300000190734863. The display drivers in Android before 5.1.1 LMY48Z and 6.0 before 2015-12-01 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted media file, aka internal bug 23987307.
Query: CVE similar to CVE-2015-4894
Matching passage: CVE-2015-4894. CWE: UNKNOWN. CVSS: 4.900000095367432. Unspecified vulnerability in the Mobile Server component in Oracle Database Mobile/Lite Server 10.3.0.3, 11.3.0.2, and 12.1.0.0 allows remote authenticated users to affect integrity and availability via unknown vectors.
Near-miss passage: CVE-2015-3910. CWE: UNKNOWN. CVSS: 7.5. Multiple unspecified vulnerabilities in Google V8 before 4.3.61.21, as used in Google Chrome before 43.0.2357.65, allow attackers to cause a denial of service or possibly have other impact via unknown vectors.
Query: Sigma rule for Detecting attempts to extract passwords with grep
Matching passage: Sigma rule: Detecting attempts to extract passwords with grep. Logsource: linux / auditd. Rule: title: Credentials In Files - Linux id: df3fcaea-2715-4214-99c5-0056ea59eb35 status: test description: Detecting attempts to extract passwords with grep references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md author: Igor Fits, oscd.community date: 2020-10-15 modified: 2023-04-30 tags: - attack.credential-access - attack.t1552.001 logsource: product: linux service: auditd detection: selection: type: EXECVE keywords: '|all': - grep - password condition: selection and keywords falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects the execution of AdvancedRun utility in the context of the TrustedInstaller, SYSTEM, Local Service or Network Se. Logsource: windows / process_creation. Rule: title: PUA - AdvancedRun Suspicious Execution id: fa00b701-44c6-4679-994d-5a18afa8a707 related: - id: d2b749ee-4225-417e-b20e-a8d2193cbb84 type: similar status: test description: Detects the execution of AdvancedRun utility in the context of the TrustedInstaller, SYSTEM, Local Service or Network Service accounts references: - https://twitter.com/splinter_code/status/1483815103279603714 - https://medium.com/s2wblog/analysis-of-destructive-malware-whispergate-targeting-ukraine-9d5d158f19f3 - https://www.elastic.co/security-labs/operation-bleeding-bear - https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/ author: Florian Roth (Nextron Systems) date: 2022-01-20 modified: 2023-02-21 tags: - attack.privilege-escalation - attack.stealth - attack.t1134.002 logsource: product: windows category: process_creation detection: selection: CommandLine|contains: - /EXEFilename - /CommandLine selection_runas: - CommandLine|contains: - ' /RunAs 8 ' - ' /RunAs 4 ' - ' /RunAs 10 ' - ' /RunAs 11 ' - CommandLine|endswith: - /RunAs 8 - /RunAs 4 - /RunAs 10 - /RunAs 11 condition: all of selection* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_pua_advancedrun_priv_user/info.yml
Query: patch priority for CVE-2015-7021
Matching passage: CVE-2015-7021. CWE: CWE-119. CVSS: 7.199999809265137. The Graphics Drivers subsystem in Apple OS X before 10.11.1 allows local users to gain privileges or cause a denial of service (kernel memory corruption) via unspecified vectors.
Near-miss passage: CVE-2015-7634. CWE: CWE-119. CVSS: 10.0. Adobe Flash Player before 18.0.0.252 and 19.x before 19.0.0.207 on Windows and OS X and before 11.2.202.535 on Linux, Adobe AIR before 19.0.0.213, Adobe AIR SDK before 19.0.0.213, and Adobe AIR SDK & Compiler before 19.0.0.213 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2015-7625, CVE-2015-7626, CVE-2015-7627, CVE-2015-7630, and CVE-2015-7633.
Query: describe CVE-2015-7538
Matching passage: CVE-2015-7538. CWE: UNKNOWN. CVSS: 8.800000190734863. Jenkins before 1.640 and LTS before 1.625.2 allow remote attackers to bypass the CSRF protection mechanism via unspecified vectors.
Near-miss passage: CVE-2015-5557. CWE: UNKNOWN. CVSS: 10.0. Use-after-free vulnerability in Adobe Flash Player before 18.0.0.232 on Windows and OS X and before 11.2.202.508 on Linux, Adobe AIR before 18.0.0.199, Adobe AIR SDK before 18.0.0.199, and Adobe AIR SDK & Compiler before 18.0.0.199 allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2015-5127, CVE-2015-5130, CVE-2015-5134, CVE-2015-5539, CVE-2015-5540, CVE-2015-5550, CVE-2015-5551, CVE-2015-5556, CVE-2015-5559, CVE-2015-5561, CVE-2015-5563, CVE-2015-5564, and CVE-2015-5565.
Query: exploit meta.h in libwmf 0.2.8.4 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted WMF file.
Matching passage: CVE-2015-4695. CWE: CWE-119. CVSS: 5.0. meta.h in libwmf 0.2.8.4 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted WMF file.
Near-miss passage: CVE-2015-7975. CWE: CWE-119. CVSS: 6.199999809265137. The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash).