CVE-2021-29948: Race Condition
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/thunderbirdto a version that resolves this vulnerability.Fixed in 1:91.12.0-1~deb10u1Fixed in 1:115.3.1-1~deb10u1Fixed in 1:102.13.1-1~deb11u1Fixed in 1:115.3.1-1~deb11u1Fixed in 1:102.15.1-1~deb12u1Fixed in 1:115.3.1-1~deb12u1Fixed in 1:115.3.1-1 - Upgrade
Upgrade
Thunderbirdto a version that resolves this vulnerability.Fixed in 78.10 - Upgrade
Upgrade
alpine/thunderbirdto a version that resolves this vulnerability.Fixed in 91.3.2-r0
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2021-29948?
CVE-2021-29948 has a moderate severity rating due to the potential for a race condition affecting signature verification.
What vulnerable software is affected by CVE-2021-29948?
CVE-2021-29948 affects Mozilla Thunderbird versions up to and including 78.10.
How do I fix CVE-2021-29948?
To fix CVE-2021-29948, upgrade Mozilla Thunderbird to a version later than 78.10.
What type of vulnerability is CVE-2021-29948?
CVE-2021-29948 is a race condition vulnerability related to signature file handling.
Can CVE-2021-29948 be exploited by local attackers?
Yes, CVE-2021-29948 can potentially be exploited by a malicious local process or user.