CVE-2021-3409

Advisory lineage Upstream: 0 Downstream: 10
Modified
Published: 23 Mar 2021, 20:20
Last modified:03 Aug 2024, 16:53

Vulnerability Summary

Overall Risk (default)
low
23/100
CVSS Score
5.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.3% LOW
0% probability +0.26%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Mar 2021, 20:20
Published
Vulnerability first disclosed
03 Aug 2024, 16:53
Last Modified
Vulnerability information updated

Description

The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective, thus making QEMU vulnerable to the out-of-bounds read/write access issues previously found in the SDHCI controller emulation code. This flaw allows a malicious privileged guest to crash the QEMU process on the host, resulting in a denial of service or potential code execution. QEMU up to (including) 5.2.0 is affected by this.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
  • v2.0•MEDIUM•Score: 4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.30%• Percentile: 54%

Techniques & Countermeasures

  • CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer

    The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Affected Systems

  • debian•debian_linux

    9.0

  • fedoraproject•fedora

    33

  • qemu•qemu

    ≤ 5.2.0

  • redhat•enterprise_linux

    7.0

References (5)