oss-security - CVE-2017-6414 Qemu: libcacard: host memory leakage while creating new APDU

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Message-ID: <alpine.LFD.2.20.1703012335480.15645@wniryva>
Date: Wed, 1 Mar 2017 23:38:14 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Li Qiang <liqiang6-s@....cn>
Subject: CVE-2017-6414 Qemu: libcacard: host memory leakage while creating
 new APDU

   Hello,

The CAC(Common Access Card) library, used by Quick Emulator(Qemu) to implement 
smartcard support, is vulnerable to a host memory leakage issue. It could 
occur while allocating a new APDU object using guest supplied raw byte stream 
in 'vcard_apdu_new'.

A guest user/process could use this flaw to leak host memory resulting in DoS.

Upstream patch:
---------------
   -> https://cgit.freedesktop.org/spice/libcacard/commit/?id=9113dc6a303604a2d9812ac70c17d076ef11886c

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1427833

This issue was reported by Li Qiang of 360.cn Inc.

'CVE-2017-6414' assigned via -> http://cveform.mitre.org/

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

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