Vulnerability · Published Jun 24, 2021 · Assigned by mozilla
CVE-2021-29950
High 7.5
In plain English
A high-severity security flaw in Thunderbird from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)0.9%top 41.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | thunderbird | 1:78.9.0-1 | DEBIAN-CVE-2021-29950 |
| Debian:13 | thunderbird | 1:78.9.0-1 | DEBIAN-CVE-2021-29950 |
| Debian:14 | thunderbird | 1:78.9.0-1 | DEBIAN-CVE-2021-29950 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | unspecified – before 78.8.1 |
References
- https://www.mozilla.org/security/advisories/mfsa2021-17/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1673239 x_refsource_MISC