oss-security - CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <nycvar.YSQ.7.76.1908011343470.30404@xnncv>
Date: Thu, 1 Aug 2019 13:46:44 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Vishnu Dev <vishnudevtj@...il.com>
Subject: CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet
 reassembly

   Hello,

A heap buffer overflow issue was found in the SLiRP networking implementation 
of the QEMU emulator. It occurs in ip_reass() routine while reassembling 
incoming packets, if the first fragment is bigger than the m->m_dat[] buffer.

A user/process could use this flaw to crash the Qemu process on the host 
resulting in DoS or potentially execute arbitrary code with privileges of the 
QEMU process.

Upstream patch:
---------------
   -> https://gitlab.freedesktop.org/slirp/libslirp/commit/126c04acbabd7ad32c2b018fe10dfac2a3bc1210

This issue was reported by Vishnu Dev(CC'd).

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

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.