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    CVE-2007-4768

    Heap-based buffer overflow in Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to execute arbitrary code via a singleton Unicode sequence in a character class in a regex pattern, which is incorrectly optimized.

    Published:Nov 5, 2007
    Last Modified:Apr 23, 2026
    EPS:Nov 7, 2007
    EPSS Score:0.09602
    CVSS Score:6.8

    Affected Products

    Vendor
    Pcre
    Product
    Pcre
    Vendor
    Redhat
    Product
    Rhel Extras

    Exploits

    No exploit reference

    Related CVEs

    CVE-2020-14155 (CVSS 5.3) — libpcre in PCRE before 8.44 allows an integer overflow via a large number after a (?C substring.…
    CVE-2019-20838 (CVSS 7.5) — libpcre in PCRE before 8.43 allows a subject buffer over-read in JIT when UTF is disabled, and \X or \R has mo…
    CVE-2017-16231 (CVSS 5.5) — In PCRE 8.41, after compiling, a pcretest load test PoC produces a crash overflow in the function match() in p…
    CVE-2017-11164 (CVSS 7.5) — In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolle…
    CVE-2017-7246 (CVSS 7.8) — Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40 allow…
    CVE-2017-7245 (CVSS 7.8) — Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40 allow…
    CVE-2017-7244 (CVSS 5.5) — The _pcre32_xclass function in pcre_xclass.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denia…
    CVE-2017-7186 (CVSS 7.5) — libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segment…
    CVE-2017-6004 (CVSS 7.5) — The compile_bracket_matchingpath function in pcre_jit_compile.c in PCRE through 8.x before revision 1680 (e.g.…
    CVE-2014-9769 (CVSS 7.3) — pcre_jit_compile.c in PCRE 8.35 does not properly use table jumps to optimize nested alternatives, which allow…

    References

    http://bugs.gentoo.org/show_bug.cgi?id=198976
    http://docs.info.apple.com/article.html?artnum=307179
    http://docs.info.apple.com/article.html?artnum=307562
    http://lists.apple.com/archives/security-announce/2007/Dec/msg00002.html
    http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
    http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00007.html
    http://mail.gnome.org/archives/gtk-devel-list/2007-November/msg00022.html
    http://secunia.com/advisories/27538
    http://secunia.com/advisories/27543
    http://secunia.com/advisories/27554
    http://secunia.com/advisories/27697
    http://secunia.com/advisories/27741
    http://secunia.com/advisories/28136
    http://secunia.com/advisories/28157
    http://secunia.com/advisories/28161
    http://secunia.com/advisories/28213
    http://secunia.com/advisories/28406
    http://secunia.com/advisories/28414
    http://secunia.com/advisories/28570
    http://secunia.com/advisories/28714
    http://secunia.com/advisories/28720
    http://secunia.com/advisories/29267
    http://secunia.com/advisories/29420
    http://secunia.com/advisories/30106
    http://secunia.com/advisories/30155
    http://secunia.com/advisories/30219
    http://secunia.com/advisories/30507
    http://secunia.com/advisories/30840
    http://security.gentoo.org/glsa/glsa-200711-30.xml
    http://security.gentoo.org/glsa/glsa-200801-02.xml
    http://security.gentoo.org/glsa/glsa-200801-18.xml
    http://security.gentoo.org/glsa/glsa-200801-19.xml
    http://security.gentoo.org/glsa/glsa-200805-11.xml
    http://securitytracker.com/id?1019116
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-238305-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-239286-1
    http://www.adobe.com/support/security/bulletins/apsb07-20.html
    http://www.adobe.com/support/security/bulletins/apsb08-13.html
    http://www.debian.org/security/2007/dsa-1399
    http://www.debian.org/security/2008/dsa-1570
    http://www.gentoo.org/security/en/glsa/glsa-200801-07.xml
    http://www.mandriva.com/security/advisories?name=MDKSA-2007:211
    http://www.redhat.com/support/errata/RHSA-2007-1126.html
    http://www.securityfocus.com/archive/1/483357/100/0/threaded
    http://www.securityfocus.com/archive/1/483579/100/0/threaded
    http://www.securityfocus.com/bid/26346
    http://www.us-cert.gov/cas/techalerts/TA07-352A.html
    http://www.us-cert.gov/cas/techalerts/TA07-355A.html
    http://www.vupen.com/english/advisories/2007/3725
    http://www.vupen.com/english/advisories/2007/3790
    http://www.vupen.com/english/advisories/2007/4238
    http://www.vupen.com/english/advisories/2007/4258
    http://www.vupen.com/english/advisories/2008/0924/references
    http://www.vupen.com/english/advisories/2008/1724/references
    http://www.vupen.com/english/advisories/2008/1966/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/38278
    https://issues.rpath.com/browse/RPL-1738
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9701
    https://usn.ubuntu.com/547-1/
    https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00181.html
    http://bugs.gentoo.org/show_bug.cgi?id=198976
    http://docs.info.apple.com/article.html?artnum=307179
    http://docs.info.apple.com/article.html?artnum=307562
    http://lists.apple.com/archives/security-announce/2007/Dec/msg00002.html
    http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
    http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00007.html
    http://mail.gnome.org/archives/gtk-devel-list/2007-November/msg00022.html
    http://secunia.com/advisories/27538
    http://secunia.com/advisories/27543
    http://secunia.com/advisories/27554
    http://secunia.com/advisories/27697
    http://secunia.com/advisories/27741
    http://secunia.com/advisories/28136
    http://secunia.com/advisories/28157
    http://secunia.com/advisories/28161
    http://secunia.com/advisories/28213
    http://secunia.com/advisories/28406
    http://secunia.com/advisories/28414
    http://secunia.com/advisories/28570
    http://secunia.com/advisories/28714
    http://secunia.com/advisories/28720
    http://secunia.com/advisories/29267
    http://secunia.com/advisories/29420
    http://secunia.com/advisories/30106
    http://secunia.com/advisories/30155
    http://secunia.com/advisories/30219
    http://secunia.com/advisories/30507
    http://secunia.com/advisories/30840
    http://security.gentoo.org/glsa/glsa-200711-30.xml
    http://security.gentoo.org/glsa/glsa-200801-02.xml
    http://security.gentoo.org/glsa/glsa-200801-18.xml
    http://security.gentoo.org/glsa/glsa-200801-19.xml
    http://security.gentoo.org/glsa/glsa-200805-11.xml
    http://securitytracker.com/id?1019116
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-238305-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-239286-1
    http://www.adobe.com/support/security/bulletins/apsb07-20.html
    http://www.adobe.com/support/security/bulletins/apsb08-13.html
    http://www.debian.org/security/2007/dsa-1399
    http://www.debian.org/security/2008/dsa-1570
    http://www.gentoo.org/security/en/glsa/glsa-200801-07.xml
    http://www.mandriva.com/security/advisories?name=MDKSA-2007:211
    http://www.redhat.com/support/errata/RHSA-2007-1126.html
    http://www.securityfocus.com/archive/1/483357/100/0/threaded
    http://www.securityfocus.com/archive/1/483579/100/0/threaded
    http://www.securityfocus.com/bid/26346
    http://www.us-cert.gov/cas/techalerts/TA07-352A.html
    http://www.us-cert.gov/cas/techalerts/TA07-355A.html
    http://www.vupen.com/english/advisories/2007/3725
    http://www.vupen.com/english/advisories/2007/3790
    http://www.vupen.com/english/advisories/2007/4238
    http://www.vupen.com/english/advisories/2007/4258
    http://www.vupen.com/english/advisories/2008/0924/references
    http://www.vupen.com/english/advisories/2008/1724/references
    http://www.vupen.com/english/advisories/2008/1966/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/38278
    https://issues.rpath.com/browse/RPL-1738
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9701
    https://usn.ubuntu.com/547-1/
    https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00181.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High