Information disclosure in Linux kernel - CVE-2011-1171
Published: June 23, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44930
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2011-1171
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
net/ipv4/netfilter/ip_tables.c in the IPv4 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.
How to mitigate CVE-2011-1171
Install update from vendor's website.
Sources
- http://downloads.avaya.com/css/P8/documents/100145416
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=78b79876761b86653df89c48a7010b5cbd41a84a
- http://marc.info/?l=linux-kernel&m=129978077609894&w=2
- http://rhn.redhat.com/errata/RHSA-2011-0833.html
- http://securityreason.com/securityalert/8278
- http://securityreason.com/securityalert/8283
- 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=689327