VulnerabilityModified
CVE-2021-29950
This vulnerability affects Thunderbird < 78.8.1.
HIGH 7.5EPSS 0.85%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import task. If the task runs into a failure, the secret key may remain in memory in its unprotected state. This vulnerability affects Thunderbird < 78.8.1.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.85% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-312
- Affected
- mozilla/thunderbird
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1673239Exploit, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-17/Release Notes, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1673239Exploit, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-17/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.