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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

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