Vulnerability Summary for CVE-2014-9769

Original release date: 03/28/2016

Last revised: 03/28/2016

Source: US-CERT/NIST

Overview

pcre_jit_compile.c in PCRE 8.35 does not properly use table jumps to optimize nested alternatives, which allows remote attackers to cause a denial of service (stack memory corruption) or possibly have unspecified other impact via a crafted string, as demonstrated by packets encountered by Suricata during use of a regular expression in an Emerging Threats Open ruleset.

Impact

CVSS Severity (version 3.0):

CVSS v3 Base Score: 7.3 High

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Impact Score: 3.4

Exploitability Score: 3.9

CVSS Version 3 Metrics:

Attack Vector (AV): Network

Attack Complexity (AC): Low

Privileges Required (PR): None

User Interaction (UI): None

Scope (S): Unchanged

Confidentiality (C): Low

Integrity (I): Low

Availability (A): Low

CVSS Severity (version 2.0):

CVSS v2 Base Score: 7.5 HIGH

Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)

Impact Subscore: 6.4

Exploitability Subscore: 10.0

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: MLIST

Name: [oss-security] 20160326 CVE Request: pcre: Segmentation fault on certain input to regular expressions with nested alternatives when JIT is used

Hyperlink: http://www.openwall.com/lists/oss-security/2016/03/26/1

External Source: CONFIRM

Name: https://redmine.openinfosecfoundation.org/issues/1693

Hyperlink: https://redmine.openinfosecfoundation.org/issues/1693

External Source: CONFIRM

Name: http://vcs.pcre.org/pcre?view=revision&revision=1475

Hyperlink: http://vcs.pcre.org/pcre?view=revision&revision=1475

External Source: CONFIRM

Name: https://bugs.debian.org/819050

Hyperlink: https://bugs.debian.org/819050