Explain CVE-2007-1661
Perl-Compatible Regular Expression (PCRE) library before 7.3 backtracks too far when matching certain input bytes against some regex patterns in non-UTF-8 mode, which allows context-dependent attackers to obtain sensitive information or cause a denial of service (crash), as demonstrated by the "\X?\d" and "\P{L}?\d" patterns.
Affected Products: n/a
References: [{'name': '30219', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/30219'}, {'name': '29267', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/29267'}, {'name': 'USN-547-1', 'tags': ['vendor-advisory', 'x_refsource_UBUNTU'], 'url': 'https://usn.ubuntu.com/547-1/'}, {'name': 'GLSA-200711-30', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-200711-30.xml'}, {'name': 'ADV-2007-4238', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2007/4238'}, {'name': '20071106 rPSA-2007-0231-1 pcre', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/483357/100/0/threaded'}, {'name': 'TA07-352A', 'tags': ['third-party-advisory', 'x_refsource_CERT'], 'url': 'http://www.us-cert.gov/cas/techalerts/TA07-352A.html'}, {'name': '27538', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/27538'}, {'name': '20071112 FLEA-2007-0064-1 pcre', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/483579/100/0/threaded'}, {'name': '28136', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/28136'}, {'name': 'DSA-1570', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2008/dsa-1570'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://issues.rpath.com/browse/RPL-1738'}, {'name': '27773', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/27773'}, {'name': '27697', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/27697'}, {'name': '28406', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/28406'}, {'name': '27554', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/27554'}, {'name': 'ADV-2008-0924', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2008/0924/references'}, {'name': 'pcre-nonutf8-dos(38274)', 'tags': ['vdb-entry', 'x_refsource_XF'], 'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/38274'}, {'name': '27543', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/27543'}, {'name': '[gtk-devel-list] 20071107 GLib 2.14.3', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://mail.gnome.org/archives/gtk-devel-list/2007-November/msg00022.html'}, {'name': '29420', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/29420'}, {'name': 'APPLE-SA-2007-12-17', 'tags': ['vendor-advisory', 'x_refsource_APPLE'], 'url': 'http://lists.apple.com/archives/security-announce/2007/Dec/msg00002.html'}, {'name': 'GLSA-200805-11', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-200805-11.xml'}, {'name': 'APPLE-SA-2008-03-18', 'tags': ['vendor-advisory', 'x_refsource_APPLE'], 'url': 'http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html'}, {'name': 'MDKSA-2007:211', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDKSA-2007:211'}, {'name': 'FEDORA-2008-1842', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00181.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://docs.info.apple.com/article.html?artnum=307179'}, {'name': '27741', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/27741'}, {'name': 'ADV-2007-3790', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2007/3790'}, {'name': 'ADV-2007-3725', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2007/3725'}, {'name': 'SUSE-SA:2007:062', 'tags': ['vendor-advisory', 'x_refsource_SUSE'], 'url': 'http://www.novell.com/linux/security/advisories/2007_62_pcre.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.pcre.org/changelog.txt'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://docs.info.apple.com/article.html?artnum=307562'}, {'name': '30155', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/30155'}, {'name': '28720', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/28720'}, {'name': 'GLSA-200801-02', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-200801-02.xml'}, {'tags': ['x_refsource_MISC'], 'url': 'http://bugs.gentoo.org/show_bug.cgi?id=198976'}, {'name': 'GLSA-200801-19', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-200801-19.xml'}, {'name': 'GLSA-200801-18', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-200801-18.xml'}, {'name': 'DSA-1399', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2007/dsa-1399'}, {'name': '28414', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/28414'}, {'name': '26346', 'tags': ['vdb-entry', 'x_refsource_BID'], 'url': 'http://www.securityfocus.com/bid/26346'}, {'name': '30106', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/30106'}, {'name': '28714', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/28714'}]
CVE State: PUBLISHED