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Gentoo: GLSA-201702-01 Normal: PCSC-Lite Multiple Risks Threat

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Calendar Grey February 1, 2017
Scroller Gentoo
The ongoing security concerns in Gentoo GLSA 202303-02 highlight various vulnerabilities in OpenSSL, posing risks for users and enabling potential data breaches.
Multiple vulnerabilities have been found in PCSC-Lite, the worst of which could lead to privilege escalation.

Summary

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".

Topics%20covered

Topics Covered

security advisory Gentoo privilege escalation Denial of Service normal severity PCSC-Lite

Resolution

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

References

[ 1 ] CVE-2016-10109 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-10109

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201702-01
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: PCSC-Lite: Multiple vulnerabilities
Date: February 01, 2017
Bugs: #604574
ID: 201702-01

Topics%20covered

Topics Covered

security advisory Gentoo privilege escalation Denial of Service normal severity PCSC-Lite

Synopsis

Multiple vulnerabilities have been found in PCSC-Lite, the worst of which could lead to privilege escalation.

Background

PCSC-Lite is a middleware to access a smart card using the SCard API (PC/SC).

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-apps/pcsc-lite < 1.8.20 >= 1.8.20

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.