fs/open.c in the Linux kernel before 2.6.22 does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by creating an executable file in a setgid directory through the (1) truncate or (2) ftruncate function in conjunction with memory-mapped I/O.
http://bugzilla.kernel.org/show_bug.cgi?id=8420
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2008-12/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2008-12/msg00001.html
http://rhn.redhat.com/errata/RHSA-2008-0972.html
https://bugzilla.redhat.com/show_bug.cgi?id=463661
http://secunia.com/advisories/32237
http://secunia.com/advisories/32344
http://secunia.com/advisories/32356
http://secunia.com/advisories/32485
http://secunia.com/advisories/32759
http://secunia.com/advisories/32799
http://secunia.com/advisories/32918
http://secunia.com/advisories/33201
http://secunia.com/advisories/33280
https://exchange.xforce.ibmcloud.com/vulnerabilities/45539
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6386
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9511
http://www.debian.org/security/2008/dsa-1653
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
http://www.mandriva.com/security/advisories?name=MDVSA-2008:220
http://www.openwall.com/lists/oss-security/2008/09/24/5
http://www.openwall.com/lists/oss-security/2008/09/24/8
http://www.redhat.com/support/errata/RHSA-2008-0787.html
http://www.redhat.com/support/errata/RHSA-2008-0957.html
Published: 2008-09-29
Base Score: 4.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
Severity: Medium