CVE-2022-3602

A stack-based buffer overflow was found in the way OpenSSL processes X.509 certificates with a specially crafted email address field. This issue could cause a server or a client application compiled with OpenSSL to crash when trying to process the malicious certificate.

As per upstream, the most common situation where this can be triggered is when a server requests client authentication after a malicious client connects. A client connecting to a malicious server is also believed to be vulnerable in the same manner. Only OpenSSL versions 3.0.0 to 3.0.6 are vulnerable to this attack. The OpenSSL binaries in Red Hat Enterprise Linux 9 are compiled with Stack Smashing Protection. Also during the build process, the compiler rearranges the variables in a way that the buffer overflow is only able to overwrite the stack canaries, limiting the maximum impact of this flaw to denial of service. Remote code execution may not be possible in such cases.

Red Hat OpenStack Platform 17 does not ship OpenSSL and is not directly affected by the flaw. However, container images which product ship are of RHEL 9 which were affected. RHOSP have fixed this by respining container images through the following errata: https://access.redhat.com/errata/RHBA-2022:7429

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.