GLSA-201706-22 : libksba: Denial of Service and information disclosure

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-201706-22
(libksba: Denial of Service and information disclosure)

It was found that an unproportionate amount of memory is allocated when
parsing crafted certificates in libskba, which may lead to Denial of
Service condition.
Moreover in libksba 1.3.4, allocated memory is uninitialized and could
potentially contain sensitive data left in freed memory block.

Impact :

A remote attacker, able to interact with an libksba-based application,
could possibly obtain sensitive information or cause a Denial of Service
condition.

Workaround :

There is no known workaround at this time.

See also :

http://seclists.org/oss-sec/2016/q3/343
https://security.gentoo.org/glsa/201706-22

Solution :

All libksba users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=dev-libs/libksba-1.3.5'

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 101017 ()

Bugtraq ID:

CVE ID: CVE-2016-4579

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