Race condition in Mozilla Thunderbird - CVE-2021-29948
Published: April 19, 2021
Vulnerability identifier: #VU52347
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-29948
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Thunderbird
Mozilla Thunderbird
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition where signatures are written to disk before and read during verification. A local user can exploit the race and replace files in the process.
How to mitigate CVE-2021-29948
Install updates from vendor's website.