Vulnerability · Published Jun 24, 2021 · Assigned by mozilla
CVE-2021-29948
Low 2.5
In plain English
A low-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 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)2.5Low
Exploit odds (30 days)0.3%top 78.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local process or user is replacing the file. This vulnerability affects Thunderbird < 78.10.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | thunderbird | 91.3.2-r0 | ALPINE-CVE-2021-29948 |
| Alpine:v3.21 | thunderbird | 91.3.2-r0 | ALPINE-CVE-2021-29948 |
| Alpine:v3.22 | thunderbird | 91.3.2-r0 | ALPINE-CVE-2021-29948 |
| Alpine:v3.23 | thunderbird | 91.3.2-r0 | ALPINE-CVE-2021-29948 |
| Debian:12 | thunderbird | 1:78.10.0-1 | DEBIAN-CVE-2021-29948 |
| Debian:13 | thunderbird | 1:78.10.0-1 | DEBIAN-CVE-2021-29948 |
| Debian:14 | thunderbird | 1:78.10.0-1 | DEBIAN-CVE-2021-29948 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | unspecified – before 78.10 |
References
- https://www.mozilla.org/security/advisories/mfsa2021-14/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1692899 x_refsource_MISC