CVE-2014-1690: Infoleak
Last updated 24 July 2024
Other sources
Linux kernel built with the NetFilter Connection Tracking(NFCONNTRACK) support for IRC protocol(NFNATIRC), is vulnerable to an information leakage flaw. It could occur when communicating over direct client-to-client IRC connection(/dcc) via a NAT-ed network. Kernel attempts to mangle IRC TCP packet's content, wherein an uninitialised 'buffer' object is copied to a socket buffer and sent over to the other end of a connection.
A user/program could use this flaw to leak kernel memory bytes.
Upstream fix: ------------- -> https://git.kernel.org/linus/2690d97ade05c5325cbf7c72b94b90d265659886
— Red Hat
The help function in net/netfilter/nfnatirc.c in the Linux kernel before 3.12.8 allows remote attackers to obtain sensitive information from kernel memory by establishing an IRC DCC session in which incorrect packet data is transmitted during use of the NAT mangle feature.
— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.22-1Fixed in 6.12.25-1 - Upgrade
Upgrade
Linux kernel (NF_NAT_IRC / net/netfilter/nf_nat_irc.c)to a version that resolves this vulnerability.Fixed in 3.12.8
Event History
Frequently Asked Questions
What is the severity of CVE-2014-1690?
CVE-2014-1690 is classified as a medium severity vulnerability due to potential information leakage.
How do I fix CVE-2014-1690?
To fix CVE-2014-1690, update your Linux kernel to versions 3.12.9 or later, or apply available patches.
Which software versions are affected by CVE-2014-1690?
CVE-2014-1690 affects Linux kernels prior to version 3.12.9, as well as Ubuntu 12.04 and 13.10.
What kind of information could be leaked due to CVE-2014-1690?
CVE-2014-1690 could lead to the leakage of information in direct client-to-client IRC communications over NAT.
Is CVE-2014-1690 easy to exploit?
Exploitation of CVE-2014-1690 requires specific conditions in the IRC protocol over a NAT-ed network, making it less straightforward.