CVE-2015-8776

Publication date 19 April 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The strftime function in the GNU C Library (aka glibc or libc6) before 2.23 allows context-dependent attackers to cause a denial of service (application crash) or possibly obtain sensitive information via an out-of-range time value.

From the Ubuntu Security Team

Adam Nielsen discovered that the strftime function in the GNU C Library did not properly handle out-of-range argument data. An attacker could use this to cause a denial of service (application crash) or possibly expose sensitive information.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
eglibc	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.04 LTS trusty	Fixed 2.19-0ubuntu6.8
	12.04 LTS precise	Fixed 2.15-0ubuntu10.14
glibc	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Fixed 2.21-0ubuntu4.2
	15.04 vivid	Ignored end of life
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release

Patch details

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

Package	Patch details
glibc	Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d36c75fc0d44deec29635dd239b0fbd206ca49b7

Severity score breakdown

Parameter	Value
Base score	9.1 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
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-2985-1
GNU C Library vulnerabilities
25 May 2016