SB2011062308 - Information disclosure in Linux kernel
Published: June 23, 2011 Updated: August 11, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2011-1172)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
net/ipv6/netfilter/ip6_tables.c in the IPv6 implementation in the Linux kernel before 2.6.39 does not place the expected ' ' character at the end of string data in the values of certain structure members, which allows local users to obtain potentially sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability to issue a crafted request, and then reading the argument to the resulting modprobe process.
Remediation
Install update from vendor's website.
References
- http://downloads.avaya.com/css/P8/documents/100145416
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6a8ab060779779de8aea92ce3337ca348f973f54
- http://marc.info/?l=linux-kernel&m=129978086410061&w=2
- http://rhn.redhat.com/errata/RHSA-2011-0833.html
- http://securityreason.com/securityalert/8278
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- http://www.openwall.com/lists/oss-security/2011/03/18/15
- http://www.openwall.com/lists/oss-security/2011/03/21/1
- http://www.openwall.com/lists/oss-security/2011/03/21/4
- https://bugzilla.redhat.com/show_bug.cgi?id=689345