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CVE-2021-23993

CVSS v3.1 6.5 (Medium)
65% Progress
CVSS v2.0 4.3 (Medium)
43% Progress
EPSS 0.08 % (33th)
0.08% Progress
Affected Products 1
Advisories 11
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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.

Weaknesses
CWE-327
Use of a Broken or Risky Cryptographic Algorithm
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2021-06-24 14:15:09
(3 years ago)
Updated Date
2021-07-06 18:47:31
(3 years ago)

Affected Products

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Thunderbird prior 78.9.1 version cpe:2.3:a:mozilla:thunderbird < 78.9.1