REDHAT-BUG-2430377: Null Pointer Dereference
A NULL pointer dereference leads to abnormal termination of the running process causing Denial of Service.
Some applications call SSLCIPHERfind() from the clienthellocb callback on the cipher ID received from the peer. If this is done with an SSL object implementing the QUIC protocol, NULL pointer dereference will happen if the examined cipher ID is unknown or unsupported.
As it is not very common to call this function in applications using the QUIC protocol and the worst outcome is Denial of Service, the issue was assessed as Low severity.
The vulnerable code was introduced in the 3.2 version with the addition of the QUIC protocol support.
The FIPS modules in 3.6, 3.5, 3.4 and 3.3 are not affected by this issue, as the QUIC implementation is outside the OpenSSL FIPS module boundary.
OpenSSL 3.6, 3.5, 3.4 and 3.3 are vulnerable to this issue.
OpenSSL 3.0, 1.1.1 and 1.0.2 are not affected by this issue.
OpenSSL 3.6 users should upgrade to OpenSSL 3.6.1.
OpenSSL 3.5 users should upgrade to OpenSSL 3.5.5.
OpenSSL 3.4 users should upgrade to OpenSSL 3.4.4.
OpenSSL 3.3 users should upgrade to OpenSSL 3.3.6.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
OpenSSLto a version that resolves this vulnerability.Fixed in 3.3.6 - Upgrade
Upgrade
OpenSSLto a version that resolves this vulnerability.Fixed in 3.4.4 - Upgrade
Upgrade
OpenSSLto a version that resolves this vulnerability.Fixed in 3.5.5 - Upgrade
Upgrade
OpenSSLto a version that resolves this vulnerability.Fixed in 3.6.1
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2430377?
REDHAT-BUG-2430377 is categorized as a Denial of Service vulnerability due to a NULL pointer dereference.
How do I fix REDHAT-BUG-2430377?
To mitigate REDHAT-BUG-2430377, update OpenSSL to the latest version that addresses this vulnerability.
What versions of OpenSSL are affected by REDHAT-BUG-2430377?
OpenSSL versions 3.2 and from 3.3 to less than 3.6 are affected by REDHAT-BUG-2430377.
What impact does REDHAT-BUG-2430377 have on systems?
The impact of REDHAT-BUG-2430377 is an abnormal termination of the running process, leading to service disruption.
Which OpenSSL function is related to REDHAT-BUG-2430377?
The vulnerability REDHAT-BUG-2430377 is related to the SSL_CIPHER_find() function called from the client_hello_cb callback.