AFS is a distributed file system originally from Carnegie Mellon University in the United States. It was subsequently further developed and published by Transarc Corporation, which in turn was acquired by IBM in the mid-1990s. In 2000 IBM has an open source version of AFS released, under the catchy name OpenAFS. For more information, we refer to this page. The developers of OpenAFS have released versions 1.8.5 and 1.6.24 for the Linux and Unix platform. The corresponding announcement looks like this:
OpenAFS 1.8.5 and 1.6.24 – Security releases for UNIX / Linux
OpenAFS 1.8.5 and 1.6.24 are the next releases in the current and old stable series of releases for UNIX / Linux systems. Previous versions contained vulnerabilities that could cause database server crashes or disclose uninitialized memory contents to (potentially unauthenticated) attackers.
- Fix OPENAFS-SA-2019-001: information leakage in failed RPC output Generated RPC handler routines ran output variables through XDR encoding even when the call had failed and would shortly be aborted (and for which uninitialized output variables is common); any complete packets assembled in the process would be sent to the peer, leaking the contents of the uninitialized memory in question.
- Fix OPENAFS-SA-2019-002: information leakage from uninitialized scalars Generated RPC handler routines did not initialize output variables of scalar (fixed-length) type, since they did not require dedicated logic to free. Such variables allocated on the stack could remain uninitialized in some cases (including those affected by OPENAFS-SA-2019-001), and the contents of uninitialized memory would be returned to the peer.
All server platforms
- Fix OPENAFS-SA-2019-003: fix crash in database servers The ubik debugging RPCs prioritize being fast and non-disruptive to database operations over strict correctness, and do not adhere to the usual locking protocol for data access. A data race could cause a NULL dereference if the second memory load was not optimized out by the compiler.
|Version number||1.8.5 / 1.6.24|
|Operating systems||Linux, BSD, macOS, Solaris, UNIX|
|License type||Conditions (GNU / BSD / etc.)|