Bug 1172495 (CVE-2020-13800) - VUL-0: CVE-2020-13800: qemu: ati-vga: infinite recursion in ati_mm_read/write calls may lead to DoS
Summary: VUL-0: CVE-2020-13800: qemu: ati-vga: infinite recursion in ati_mm_read/write...
Status: RESOLVED FIXED
Alias: CVE-2020-13800
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: E-mail List
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/260717/
Whiteboard: CVSSv3.1:SUSE:CVE-2020-13800:6.0:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2020-06-04 06:06 UTC by Wolfgang Frisch
Modified: 2020-08-08 10:27 UTC (History)
1 user (show)

See Also:
Found By: ---
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---


Attachments
CVE-2020-13800-qemu.patch (1.48 KB, patch)
2020-06-04 06:08 UTC, Wolfgang Frisch
Details | Diff

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Description Wolfgang Frisch 2020-06-04 06:06:44 UTC
CVE-2020-13800

An infinite recursion issue was found in the ati-vga emulator of the QEMU. It could occur in ati_mm_read/write routines while accessing VGA registers, for certain values of the 'mm_index' variable. A guest user/process may use this flaw to crash the QEMU process resulting in DoS scenario. 

References:
https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg00833.html
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-13800
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13800
Comment 1 Wolfgang Frisch 2020-06-04 06:08:19 UTC
Created attachment 838490 [details]
CVE-2020-13800-qemu.patch

Upstream patch
Comment 2 Wolfgang Frisch 2020-06-04 06:08:54 UTC
ATI VGA emulation was introduced in QEMU 4.0.
Thus only SUSE:SLE-15-SP2:Update is affected.
Comment 3 Bruce Rogers 2020-06-19 02:46:47 UTC
Fix now committed upstream as a98610c429d52db0937c1e48659428929835c455
Comment 4 Bruce Rogers 2020-06-24 20:55:56 UTC
Fix is queued for first SLE15-SP2 maintenance update.
Comment 7 Swamp Workflow Management 2020-07-23 10:22:17 UTC
SUSE-SU-2020:2015-1: An update that fixes 5 vulnerabilities is now available.

Category: security (important)
Bug References: 1172383,1172384,1172386,1172495,1172710
CVE References: CVE-2020-10761,CVE-2020-13361,CVE-2020-13362,CVE-2020-13659,CVE-2020-13800
Sources used:
SUSE Linux Enterprise Module for Server Applications 15-SP2 (src):    qemu-4.2.1-11.4.4
SUSE Linux Enterprise Module for Basesystem 15-SP2 (src):    qemu-4.2.1-11.4.4

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 8 Swamp Workflow Management 2020-07-28 16:14:31 UTC
openSUSE-SU-2020:1108-1: An update that fixes 5 vulnerabilities is now available.

Category: security (important)
Bug References: 1172383,1172384,1172386,1172495,1172710
CVE References: CVE-2020-10761,CVE-2020-13361,CVE-2020-13362,CVE-2020-13659,CVE-2020-13800
JIRA References: 
Sources used:
openSUSE Leap 15.2 (src):    qemu-4.2.1-lp152.9.3.1, qemu-linux-user-4.2.1-lp152.9.3.1, qemu-testsuite-4.2.1-lp152.9.3.1
Comment 9 Marcus Meissner 2020-08-08 10:27:57 UTC
done