Vulnerability Name:

CVE-2006-7226 (CCN-40020)

Assigned:2007-11-13
Published:2007-11-13
Updated:2017-10-11
Summary:Perl-Compatible Regular Expression (PCRE) library before 6.7 does not properly calculate the compiled memory allocation for regular expressions that involve a quantified "subpattern containing a named recursion or subroutine reference," which allows context-dependent attackers to cause a denial of service (error or crash).
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
3.2 Low (Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
3.7 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-Other
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2006-7226

Source: SUSE
Type: UNKNOWN
SUSE-SA:2008:004

Source: CCN
Type: RHSA-2007-1059
Important: pcre security update

Source: CCN
Type: RHSA-2007-1068
Important: pcre security update

Source: CCN
Type: SA28041
Avaya Products PCRE Multiple Vulnerabilities

Source: SECUNIA
Type: UNKNOWN
28041

Source: SECUNIA
Type: UNKNOWN
28658

Source: CONFIRM
Type: UNKNOWN
http://support.avaya.com/elmodocs2/security/ASA-2007-505.htm

Source: CCN
Type: ASA-2007-505
PCRE security update (RHSA-2007-1068)

Source: MANDRIVA
Type: UNKNOWN
MDVSA-2008:030

Source: CCN
Type: OSVDB ID: 40755
Perl-Compatible Regular Expression (PCRE) Compiled Memory Allocation Miscalculation Failure DoS

Source: CCN
Type: PCRE Web site
PCRE - Perl Compatible Regular Expressions

Source: CONFIRM
Type: UNKNOWN
http://www.pcre.org/changelog.txt

Source: REDHAT
Type: UNKNOWN
RHSA-2007:1059

Source: REDHAT
Type: UNKNOWN
RHSA-2007:1068

Source: BID
Type: UNKNOWN
26727

Source: CCN
Type: BID-26727
PCRE Perl Compatible Regular Expression Subpattern Memory Allocation Denial Of Service Vulnerability

Source: CCN
Type: Red Hat Bugzilla Bug 384781
CVE-2006-7226 pcre miscalculation of memory requirements for repeated subpattern containing a named recursion or subroutine reference

Source: MISC
Type: UNKNOWN
https://bugzilla.redhat.com/show_bug.cgi?id=384781

Source: XF
Type: UNKNOWN
pcre-library-subpattern-dos(40020)

Source: XF
Type: UNKNOWN
pcre-library-subpattern-dos(40020)

Source: OVAL
Type: UNKNOWN
oval:org.mitre.oval:def:11545

Source: SUSE
Type: SUSE-SA:2008:004
php5 php4 Security Problems

Vulnerable Configuration:Configuration 1:
  • cpe:/o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:redhat:enterprise_linux:4.0:*:as:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:4.0:*:es:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:4.0:*:ws:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:5::client:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:5::client_workstation:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:5::server:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:4:*:*:*:*:*:*:*

    • Configuration RedHat 6:
  • cpe:/o:redhat:enterprise_linux:4::as:*:*:*:*:*

    • Configuration RedHat 7:
  • cpe:/o:redhat:enterprise_linux:4::desktop:*:*:*:*:*

    • Configuration RedHat 8:
  • cpe:/o:redhat:enterprise_linux:4::es:*:*:*:*:*

    • Configuration RedHat 9:
  • cpe:/o:redhat:enterprise_linux:4::ws:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20067226
    V
    		CVE-2006-7226
    2015-11-16
    oval:org.mitre.oval:def:22565
    P
    		ELSA-2007:1059: pcre security update (Important)
    2014-05-26
    oval:org.mitre.oval:def:11545
    V
    		Perl-Compatible Regular Expression (PCRE) library before 6.7 does not properly calculate the compiled memory allocation for regular expressions that involve a quantified "subpattern containing a named recursion or subroutine reference," which allows context-dependent attackers to cause a denial of service (error or crash).
    2013-04-29
    oval:com.redhat.rhsa:def:20071059
    P
    		RHSA-2007:1059: pcre security update (Important)
    2008-03-20
    oval:com.redhat.rhsa:def:20071068
    P
    		RHSA-2007:1068: pcre security update (Important)
    2007-11-29
    BACK
    redhat enterprise linux desktop 4.0
    redhat enterprise linux 4.0
    redhat enterprise linux 4.0
    redhat enterprise linux 4.0