A path traversal flaw was found in spacewalk-proxy, all versions through 2.9, in the way the proxy processes cached client tokens. A remote, unauthenticated attacker could use this flaw to test the existence of arbitrary files, if they have access to the proxy's filesystem, or can execute arbitrary code in the context of the httpd process.

It was found that Spacewalk, all versions through 2.9, did not safely compute client token checksums. An attacker with a valid, but expired, authenticated set of headers could move some digits around, artificially extending the session validity without modifying the checksum.