Bug 1410074 – CVE-2016-10109 pcsc-lite: Use-after-free of cardsList due to SCardReleaseContext invocations

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Bug 1410074 - (CVE-2016-10109) CVE-2016-10109 pcsc-lite: Use-after-free of cardsList due to SCardReleaseContext invocations

Summary:	CVE-2016-10109 pcsc-lite: Use-after-free of cardsList due to SCardReleaseCont...

Status:	NEW

Aliases:	CVE-2016-10109

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=moderate,public=20161230,repor...
Keywords:	Security

Depends On:	1410075
Blocks:	1410078
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Reported:	2017-01-04 07:02 EST by Andrej Nemec
Modified:	2017-01-05 01:31 EST (History)
CC List:	5 users (show)

See Also:
Fixed In Version:	pcsc-lite 1.8.20
Doc Type:	If docs needed, set a value
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Description Andrej Nemec 2017-01-04 07:02:47 EST

A vulnerability was found in PCSC-Lite.  The SCardReleaseContext function normally releases resources associated with the given handle (including "cardsList") and clients should cease using this handle. A malicious client can however 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".

References:

http://seclists.org/oss-sec/2017/q1/18
http://lists.alioth.debian.org/pipermail/pcsclite-muscle/Week-of-Mon-20161226/000779.html

Upstream patch:

https://anonscm.debian.org/cgit/pcsclite/PCSC.git/commit/?id=697fe05967af7ea215bcd5d5774be587780c9e22

Comment 1 Andrej Nemec 2017-01-04 07:06:44 EST

Created pcsc-lite tracking bugs for this issue:

Affects: fedora-all [bug 1410075]

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