CVE-2016-4355

Publication date 29 April 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Multiple integer overflows in ber-decoder.c in Libksba before 1.3.3 allow remote attackers to cause a denial of service (crash) via crafted BER data, which leads to a buffer overflow.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libksba	16.04 LTS xenial	Not affected
	15.10 wily	Not affected
	14.04 LTS trusty	Fixed 1.3.0-3ubuntu0.14.04.2
	12.04 LTS precise	Fixed 1.2.0-2ubuntu0.2

Notes

mdeslaur

same commit as CVE-2016-4354

Patch details

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

Package	Patch details
libksba	Upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=aea7b6032865740478ca4b706850a5217f1c3887

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

References

Related Ubuntu Security Notices (USN)

USN-2982-1
Libksba vulnerabilities
17 May 2016