CVE-2023-0547 Security feature bypass in Thunderbird
Thunderbird failed to check OCSP revocation status for S/MIME recipients, allowing revoked certificates to be accepted for encrypted emails.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-0547?
CVE-2023-0547 is a medium-severity vulnerability in Mozilla Thunderbird, published on 2 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OCSP revocation status of recipient certificates was not checked when sending S/Mime encrypted email, and revoked certificates would be accepted. Thunderbird versions from 68 to 102.9.1 were affected by this bug. This vulnerability affects Thunderbird < 102.10.
Weakness: CWE-295
Which versions are affected by CVE-2023-0547?
It affects 1 product.
Products include Mozilla Thunderbird.
How do I fix CVE-2023-0547?
Upgrade to a fixed version.
Is CVE-2023-0547 being exploited?
There is no known exploitation of CVE-2023-0547 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Thunderbird
Sources
Also known as DEBIAN-CVE-2023-0547, GHSA-r9gq-fgfv-3p2p, UBUNTU-CVE-2023-0547.