CVE-2017-11164

Publication date 11 July 2017

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolled recursion) when processing a crafted regular expression.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
pcre3	24.04 LTS noble	Vulnerable
	23.10 mantic	Ignored
	23.04 lunar	Ignored
	22.10 kinetic	Ignored
	22.04 LTS jammy	Vulnerable
	21.10 impish	Ignored
	21.04 hirsute	Ignored
	20.10 groovy	Ignored
	20.04 LTS focal	Vulnerable
	19.10 eoan	Ignored
	19.04 disco	Ignored
	18.10 cosmic	Ignored
	18.04 LTS bionic	Vulnerable
	17.10 artful	Ignored
	17.04 zesty	Ignored
	16.10 yakkety	Ignored
	16.04 LTS xenial	Ignored
	14.04 LTS trusty	Vulnerable

Notes

sbeattie

reproducer in oss-security posting. to exploit this requires an application take regular expressions as untrusted input (not just the string to match against), which is generally not safe to do with pcre.

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H