Out-of-bounds Read Affecting virt:rhel/libvirt-daemon package, versions <0:8.0.0-10.module+el8.7.0+16689+53d59bc2


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-RHEL8-VIRT-5047974
  • published22 Feb 2022
  • disclosed18 Feb 2022

Introduced: 18 Feb 2022

CVE-2022-23645  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:8 virt:rhel/libvirt-daemon to version 0:8.0.0-10.module+el8.7.0+16689+53d59bc2 or higher.
This issue was patched in RHSA-2022:7472.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt:rhel/libvirt-daemon package and not the virt:rhel/libvirt-daemon package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read. A specially crafted header of swtpm's state, where the blobheader's hdrsize indicator has an invalid value, may cause an out-of-bounds access when the byte array representing the state of the TPM is accessed. This will likely crash swtpm or prevent it from starting since the state cannot be understood. Users should upgrade to swtpm v0.5.3, v0.6.2, or v0.7.1 to receive a patch. There are currently no known workarounds.

CVSS Scores

version 3.1