CVE-2020-13361

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Last Modified: UTC

Description

An out-of bounds access flaw was found in the ES1370 audio device emulator of the QEMU. This flaw occurs in the 'audio_pcm_sw_read', while reading an audio byte stream from a channel if the channel frame count is set to a malicious value. A guest user or process may use this flaw to crash the QEMU process on the host, resulting in a denial of service.

An out-of bounds access flaw was found in the ES1370 audio device emulator of the QEMU. This flaw occurs in the 'audio_pcm_sw_read', while reading an audio byte stream from a channel if the channel frame count is set to a malicious value. A guest user or process may use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Additional information

  • Bugzilla 1840980: QEMU: es1370: OOB access due to incorrect frame count leads to DoS
  • CWE-787: Out-of-bounds Write
  • FAQ: Frequently asked questions about CVE-2020-13361

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown
Red HatNVD

CVSS v3 Base Score

3.9

3.9

Attack Vector

Local

Local

Attack Complexity

High

High

Privileges Required

High

High

User Interaction

None

None

Scope

Changed

Changed

Confidentiality Impact

None

None

Integrity Impact

Low

Low

Availability Impact

Low

Low

CVSS v3 Vector

Red Hat: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L

NVD: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L

Acknowledgements

Red Hat would like to thank Hanqing Zhao (SSLab Georgia Tech) and Ren Ding (SSLab Georgia Tech) for reporting this issue.

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

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I have a Red Hat product but it is not in the above list, is it affected?

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