GLSA-201702-01 : PCSC-Lite: Multiple vulnerabilities

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-201702-01
(PCSC-Lite: Multiple vulnerabilities)

The SCardReleaseContext function normally releases resources associated
with the given handle (including “cardsList”) and clients should
cease using this handle. However, a malicious client can make the daemon
invoke SCardReleaseContext and continue issuing other commands that use
“cardsList”, resulting in a use-after-free. When SCardReleaseContext
is invoked multiple times it additionally results in a double-free of
“cardsList”.

Impact :

A local attacker could use a malicious client to connect to pcscd’s
Unix socket, possibly resulting in a Denial of Service condition or
privilege escalation since the daemon is running as root.

Workaround :

There is no known workaround at this time.

See also :

https://security.gentoo.org/glsa/201702-01

Solution :

All PCSC-Lite users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=sys-apps/pcsc-lite-1.8.20'

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: 96916 ()

Bugtraq ID:

CVE ID: CVE-2016-10109

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