QEMU Recursion hw/display/ati.c ati_mm_read/ati_mm_write infinite loop

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in QEMU and classified as problematic. This impacts the function ati_mm_read/ati_mm_write of the file hw/display/ati.c of the component Recursion. This manipulation causes infinite loop. This vulnerability is tracked as CVE-2020-13800. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in QEMU (Virtualization Software) (the affected version unknown). Affected by this vulnerability is the function ati_mm_read/ati_mm_write of the file hw/display/ati.c of the component Recursion. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect availability. The summary by CVE is:

ati-vga in hw/display/ati.c in QEMU 4.2.0 allows guest OS users to trigger infinite recursion via a crafted mm_index value during an ati_mm_read or ati_mm_write call.

The weakness was disclosed 06/04/2020 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2020-13800 since 06/03/2020. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (209571). The entries VDB-156186 and VDB-156184 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.2
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.0
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/03/2020 🔍
06/04/2020 +1 days 🔍
06/05/2020 +1 days 🔍
10/26/2024 +1604 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-13800 (🔍)
GCVE (CVE): GCVE-0-2020-13800
GCVE (VulDB): GCVE-100-156187
See also: 🔍

Entryinfo

Created: 06/05/2020 16:28
Updated: 10/26/2024 21:05
Changes: 06/05/2020 16:28 (38), 06/05/2020 16:33 (18), 10/22/2020 13:30 (1), 10/26/2024 21:05 (17)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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