CVE-2015-2326

Publication date 1 April 2015

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

Description

The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".

Read the notes from the security team

Status

Package Ubuntu Release Status
pcre3 15.10 wily
Fixed 2:8.35-7.1ubuntu1.3
15.04 vivid
Fixed 2:8.35-3.3ubuntu1.1
14.10 utopic Ignored end of life
14.04 LTS trusty
Fixed 1:8.31-2ubuntu2.1
12.04 LTS precise
Not affected
10.04 LTS lucid Ignored end of life

Notes

tyhicks

Valgrind detects a 1-byte invalid read on Vivid through Trusty

mdeslaur

was supposed to be fixed in wily (2:8.35-7ubuntu2) but got reverted in (2:8.35-7ubuntu5) by mistake CVE-2015-2325_CVE-2015-2326_CVE-2015-3210_CVE-2015-5073.patch in jessie

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
pcre3

Severity score breakdown

Parameter Value
Base score 5.5 · Medium
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references