nfs2acl.c in the Linux kernel 2.6.14.4 does not check for MAY_SATTR privilege before setting access controls (ACL) on files on exported NFS filesystems, which allows remote attackers to bypass ACLs for readonly mounted NFS filesystems.

References

• https://nvd.nist.gov/vuln/detail/CVE-2005-3623
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11707
• http://lists.suse.de/archive/suse-security-announce/2006-Feb/0010.html
• http://lkml.org/lkml/2005/12/23/171
• http://secunia.com/advisories/18788
• http://secunia.com/advisories/19038
• http://secunia.com/advisories/21465
• http://secunia.com/advisories/22417
• http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm
• http://www.novell.com/linux/security/advisories/2006_06_kernel.html
• http://www.redhat.com/support/errata/RHSA-2006-0575.html
• http://www.securityfocus.com/bid/16570