CVE-2015-5073

Publication date 26 June 2015

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Heap-based buffer overflow in the find_fixedlength function in pcre_compile.c in PCRE before 8.38 allows remote attackers to cause a denial of service (crash) or obtain sensitive information from heap memory and possibly bypass the ASLR protection mechanism via a crafted regular expression with an excess closing parenthesis.

Read the notes from the security team

Status

Show unmaintained releases

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	Fixed 8.12-4ubuntu0.1

Notes

mdeslaur

in wily, this was already fixed by the fix_find_fixedlength patch, but the testcases weren't included 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	Upstream: http://vcs.pcre.org/pcre?view=revision&revision=1571

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.1 · Critical

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	9.1 · Critical
Exploitability score	-
Impact score	-

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

References

Related Ubuntu Security Notices (USN)

USN-2694-1
PCRE vulnerabilities
29 July 2015

USN-2943-1
PCRE vulnerabilities
29 March 2016