CVE-2011-1080

Published: 25 July 2011

The do_replace function in net/bridge/netfilter/ebtables.c in the Linux kernel before 2.6.39 does not ensure that a certain name field ends with a '\0' character, which allows local users to obtain potentially sensitive information from kernel stack memory by leveraging the CAP_NET_ADMIN capability to replace a table, and then reading a modprobe command line.

From the Ubuntu security team

Vasiliy Kulikov discovered that bridge network filtering did not check that name fields were NULL terminated. A local attacker could exploit this to leak contents of kernel stack memory, leading to a loss of privacy.

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1080
• https://ubuntu.com/security/notices/USN-1187-1
• https://ubuntu.com/security/notices/USN-1189-1
• https://ubuntu.com/security/notices/USN-1202-1
• https://ubuntu.com/security/notices/USN-1204-1
• https://ubuntu.com/security/notices/USN-1167-1
• https://ubuntu.com/security/notices/USN-1160-1
• https://ubuntu.com/security/notices/USN-1141-1
• https://ubuntu.com/security/notices/USN-1162-1
• https://ubuntu.com/security/notices/USN-1159-1
• https://ubuntu.com/security/notices/USN-1212-1
• https://ubuntu.com/security/notices/USN-1256-1
• NVD
• Launchpad
• Debian

Bugs

• https://launchpad.net/bugs/816545