CVE-2023-0430
First published: Mon Jan 23 2023(Updated: )
Certificate OCSP revocation status was not checked when verifying S/Mime signatures. Mail signed with a revoked certificate would be displayed as having a valid signature. Thunderbird versions from 68 to 102.7.0 were affected by this bug.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/thunderbird | <=1:91.12.0-1~deb10u1 | 1:115.3.1-1~deb10u1 1:102.13.1-1~deb11u1 1:115.3.1-1~deb11u1 1:102.15.1-1~deb12u1 1:115.3.1-1~deb12u1 1:115.3.1-1 |
| Thunderbird | <102.7.1 | 102.7.1 |
| Thunderbird | >=68.0<102.7.1 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1769000
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-04/
- https://www.mozilla.org/security/advisories/mfsa2023-04/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-04/#CVE-2023-0430
- https://security-tracker.debian.org/tracker/CVE-2023-0430
Frequently Asked Questions
What is the severity of CVE-2023-0430?
CVE-2023-0430 has been classified as a high severity vulnerability due to the risk of displaying a valid signature for emails signed with revoked certificates.
How do I fix CVE-2023-0430?
To fix CVE-2023-0430, upgrade to Thunderbird version 102.7.1 or later.
Which versions of Thunderbird are affected by CVE-2023-0430?
CVE-2023-0430 affects Thunderbird versions from 68.0 up to, but not including, 102.7.1.
What impact does CVE-2023-0430 have on email security?
CVE-2023-0430 undermines email security by allowing emails signed with revoked certificates to appear as valid, potentially leading to trust issues.
Is the OCSP check really important in CVE-2023-0430?
Yes, the OCSP check is critical for verifying the revocation status of certificates to ensure the integrity of email signatures.
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