Unrated severityNVD Advisory· Published Jun 24, 2021· Updated Aug 3, 2024
CVE-2021-23993
CVE-2021-23993
Description
An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1.
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Affected products
4<78.9.1+ 1 more
- (no CPE)range: <78.9.1
- (no CPE)range: unspecified
- osv-coords2 versionspkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweed
< 78.9.1-lp152.2.38.1+ 1 more
- (no CPE)range: < 78.9.1-lp152.2.38.1
- (no CPE)range: < 91.1.1-1.1
Patches
Vulnerability mechanics
References
2- bugzilla.mozilla.org/show_bug.cgimitrex_refsource_MISC
- www.mozilla.org/security/advisories/mfsa2021-13/mitrex_refsource_MISC
News mentions
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