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CVE Vulnerability Details :
CVE-2021-23991
PUBLISHED
More InfoOfficial Page
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
View Known Exploited Vulnerability (KEV) details
Published At-24 Jun, 2021 | 13:27
Updated At-03 Aug, 2024 | 19:14
Rejected At-
▼CVE Numbering Authority (CNA)

If a Thunderbird user has previously imported Alice's OpenPGP key, and Alice has extended the validity period of her key, but Alice's updated key has not yet been imported, an attacker may send an email containing a crafted version of Alice's key with an invalid subkey, Thunderbird might subsequently attempt to use the invalid subkey, and will fail to send encrypted email to Alice. This vulnerability affects Thunderbird < 78.9.1.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Affected
  • From unspecified before 78.9.1 (custom)
Problem Types
TypeCWE IDDescription
textN/AAn attacker may use Thunderbird's OpenPGP key refresh mechanism to poison an existing key
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.mozilla.org/security/advisories/mfsa2021-13/
x_refsource_MISC
https://bugzilla.mozilla.org/show_bug.cgi?id=1673240
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.mozilla.org/security/advisories/mfsa2021-13/
x_refsource_MISC
x_transferred
https://bugzilla.mozilla.org/show_bug.cgi?id=1673240
x_refsource_MISC
x_transferred
Details not found