CVE-2024-12797
Publication date 11 February 2025
Last updated 13 February 2025
Ubuntu priority
Issue summary: Clients using RFC7250 Raw Public Keys (RPKs) to authenticate a server may fail to notice that the server was not authenticated, because handshakes don't abort as expected when the SSL_VERIFY_PEER verification mode is set. Impact summary: TLS and DTLS connections using raw public keys may be vulnerable to man-in-middle attacks when server authentication failure is not detected by clients. RPKs are disabled by default in both TLS clients and TLS servers. The issue only arises when TLS clients explicitly enable RPK use by the server, and the server, likewise, enables sending of an RPK instead of an X.509 certificate chain. The affected clients are those that then rely on the handshake to fail when the server's RPK fails to match one of the expected public keys, by setting the verification mode to SSL_VERIFY_PEER. Clients that enable server-side raw public keys can still find out that raw public key verification failed by calling SSL_get_verify_result(), and those that do, and take appropriate action, are not affected. This issue was introduced in the initial implementation of RPK support in OpenSSL 3.2. The FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
Read the notes from the security team
Why is this CVE high priority?
OpenSSL developers have rated this of high severity
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| edk2 | 24.10 oracular |
Not affected
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| nodejs | 24.10 oracular |
Not affected
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| openssl | 24.10 oracular |
Fixed 3.3.1-2ubuntu2.1
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy FIPS Updates |
Not affected
|
|
| 20.04 LTS focal FIPS Updates |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| openssl1.0 | 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic |
Not affected
|
Notes
mdeslaur
3.2.x+ only introduced in RFC7250 support by this commit: https://github.com/openssl/openssl/commit/3c95ef22df55cb2d9dc64ce1f3be6e5a8ee63206
References
Related Ubuntu Security Notices (USN)
- USN-7264-1
- OpenSSL vulnerabilities
- 11 February 2025