PT-2015-7791 · Php Community+2 · Pcre+2

Published 2015-12-01 · Updated 2023-02-16 · CVE-2015-8390

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions PCRE versions prior to 8.38

Description The issue concerns how PCRE handles the [: and `` substrings in character classes. This mishandling allows remote attackers to cause a denial of service due to an uninitialized memory read or possibly have other unspecified impacts. The attack can be carried out via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

Recommendations For versions prior to 8.38, update to version 8.38 or later to resolve the issue. As a temporary workaround, consider restricting the use of character classes in regular expressions until a patch is applied. Avoid using the [: and `` substrings in character classes to minimize the risk of exploitation.

Fix

DoS

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

CVE-2015-8390

SUSE-SU-2016:2971-1

SUSE-SU-2016:3161-1

SUSE-SU-2017:2699-1

SUSE-SU-2017:2700-1

USN-2943-1

Affected Products

Pcre

Suse

Ubuntu

References · 124

• https://ubuntu.com/security/CVE-2015-8389 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8383 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8393 · Security Note
• https://ubuntu.com/security/CVE-2015-8394 · Vendor Advisory
• http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-3210 · Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174931.html · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8388 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2326 · Security Note
• https://ubuntu.com/security/CVE-2015-8383 · Vendor Advisory
• https://ubuntu.com/security/CVE-2014-9769 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1283 · Security Note
• https://ubuntu.com/security/CVE-2015-8393 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8390 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9769 · Security Note