GLSA 200704-03: OpenAFS: Privilege escalation
| Severity: | high |
| Title: | OpenAFS: Privilege escalation |
| Date: | 04/03/2007 |
| Bugs: | |
| ID: | 200704-03 |
Synopsis
OpenAFS is subject to a design flaw that could allow privilege escalation on the client.Background
OpenAFS is a distributed network filesystem.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| net-fs/openafs | < 1.4.4 | >= 1.4.4 | All supported architectures |
Description
Benjamin Bennett discovered that the OpenAFS client contains a design flaw where cache managers do not use authenticated server connections when performing actions not requested by a user.
Impact
If setuid is enabled on the client cells, an attacker can supply a fake FetchStatus reply that sets setuid and root ownership of a file being executed. This could provide root access on the client. Remote attacks may be possible if an attacker can entice a user to execute a known file. Note that setuid is enabled by default in versions of OpenAFS prior to 1.4.4.
Workaround
Disable the setuid functionality on all client cells. This is now the default configuration in OpenAFS.
Resolution
All OpenAFS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-fs/openafs-1.4.4"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.