CVE-2011-1585

Published: 06 October 2011

The cifs_find_smb_ses function in fs/cifs/connect.c in the Linux kernel before 2.6.36 does not properly determine the associations between users and sessions, which allows local users to bypass CIFS share authentication by leveraging a mount of a share by a different user.

From the Ubuntu security team

It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password.

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1585
• https://rhn.redhat.com/errata/RHSA-2011-1253.html
• https://usn.ubuntu.com/usn/usn-1203-1
• https://usn.ubuntu.com/usn/usn-1208-1
• https://usn.ubuntu.com/usn/usn-1216-1
• https://usn.ubuntu.com/usn/usn-1218-1
• https://usn.ubuntu.com/usn/usn-1256-1
• https://usn.ubuntu.com/usn/usn-1268-1
• https://usn.ubuntu.com/usn/usn-1272-1
• https://usn.ubuntu.com/usn/usn-1271-1
• https://usn.ubuntu.com/usn/usn-1278-1
• https://usn.ubuntu.com/usn/usn-1280-1
• NVD
• Launchpad
• Debian

Bugs

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1585
• https://launchpad.net/bugs/869208