Time-of-check Time-of-use (TOCTOU) Affecting thunderbird package, versions <0:78.10.0-1.el7_9


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-RHEL7-THUNDERBIRD-1532909
  • published26 Jul 2021
  • disclosed19 Apr 2021

Introduced: 19 Apr 2021

CVE-2021-29948  (opens in a new tab)
CWE-367  (opens in a new tab)

How to fix?

Upgrade RHEL:7 thunderbird to version 0:78.10.0-1.el7_9 or higher.
This issue was patched in RHSA-2021:1350.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local process or user is replacing the file. This vulnerability affects Thunderbird < 78.10.

CVSS Scores

version 3.1