Unrestricted Upload of File with Dangerous Type The advisory has been revoked - it doesn't affect any version of package thunderbird (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL9-THUNDERBIRD-12352853
- published1 Sept 2025
- disclosed20 Jul 2023
Introduced: 20 Jul 2023
CVE-2023-3417 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by RHEL.
Thunderbird allowed the Text Direction Override Unicode Character in filenames. An email attachment could be incorrectly shown as being a document file, while in fact it was an executable file. Newer versions of Thunderbird will strip the character and show the correct file extension. This vulnerability affects Thunderbird < 115.0.1 and Thunderbird < 102.13.1.
References
- https://access.redhat.com/security/cve/CVE-2023-3417
- https://bugzilla.mozilla.org/show_bug.cgi?id=1835582
- https://lists.debian.org/debian-lts-announce/2023/07/msg00032.html
- https://www.debian.org/security/2023/dsa-5463
- https://www.mozilla.org/security/advisories/mfsa2023-27/
- https://www.mozilla.org/security/advisories/mfsa2023-28/