Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [day] [month] [year] [list]
Date: Wed, 17 Oct 2018 12:59:01 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Arash TC <tohidi.arash@...il.com>
Subject: CVE-2018-18438 Qemu: Integer overflow in ccid_card_vscard_read()
 allows memory corruption

   Hello,

An integer overflow issue was found in the CCID Passthru card device 
emulation, while reading card data in ccid_card_vscard_read() function. The 
ccid_card_vscard_read() function accepts a signed integer 'size' argument, 
which is subsequently used as unsigned size_t value in memcpy(), copying large 
amounts of memory.

A user inside guest could use this flaw to crash the Qemu process resulting in 
DoS.

Upstream patch:
---------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02396.html
   -> https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02402.html

This issue was reported by Arash Tohidi. CVE requested via -> https://cveform.mitre.org/


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

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.