oss-security - CVE-2020-13253 QEMU: sd: OOB access could crash the guest resulting in DoS

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

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

Message-ID: <nycvar.YSQ.7.77.849.2005271253030.62159@xnncv>
Date: Wed, 27 May 2020 12:55:43 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Alexander Bulekov <alxndr@...edu>
Subject: CVE-2020-13253 QEMU: sd: OOB access could crash the guest resulting
 in DoS

   Hello,

An out-of-bounds read access issue was found in the SD Memory Card emulator of 
the QEMU. It occurs while performing block write commands via sdhci_write(), 
if a guest user has sent 'address' which is OOB of 's->wp_groups'. A guest 
user/process may use this flaw to crash the QEMU process resulting in DoS.

Upstream bug/thread:
   -> https://bugs.launchpad.net/qemu/+bug/1880822
   -> https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg05877.html

This issue was reported by Alexander Bulekov(CC'd). 'CVE-2020-13253' requested 
via -> https://cveform.mitre.org/

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
8685 545E B54C 486B C6EB 271E E285 8B5A F050 DE8D

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.