CVE-2017-6891

Publication date 22 May 2017

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

Two errors in the "asn1_find_node()" function (lib/parser_aux.c) within GnuTLS libtasn1 version 4.10 can be exploited to cause a stacked-based buffer overflow by tricking a user into processing a specially crafted assignments file via the e.g. asn1Coding utility.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libtasn1-3	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
libtasn1-6	17.04 zesty	Fixed 4.10-1ubuntu0.1
	16.10 yakkety	Fixed 4.9-4ubuntu0.1
	16.04 LTS xenial	Fixed 4.7-3ubuntu0.16.04.2
	14.04 LTS trusty	Fixed 3.4-3ubuntu0.5

Patch details

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

Package	Patch details
libtasn1-6	Upstream: https://git.savannah.gnu.org/gitweb/?p=libtasn1.git;a=commit;h=5520704d075802df25ce4ffccc010ba1641bd484

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2017-6891

Cvss 3 Severity Score

Status

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references