CVE-2014-4667
First published: Fri Jun 27 2014(Updated: )
Description of the problem: For a TCP-style socket, while processing the COOKIE_ECHO chunk in sctp_sf_do_5_1D_ce(), after it has passed a series of sanity check, a new association would be created in sctp_unpack_cookie(), but afterwards, some processing maybe failed, and sctp_association_free() will be called to free the previously allocated association, in sctp_association_free(), sk_ack_backlog value is decremented for this socket, since the initial value for sk_ack_backlog is 0, after the decrement, it will be 65535, a wrap-around problem happens, and if we want to establish new associations afterward in the same socket, ABORT would be triggered since sctp deem the accept queue as full. A remote attacker can block further connection to the particular sctp server socket by sending a specially crafted sctp packet. Upstream patch: <a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d3217b15a19a4779c39b212358a5c71d725822ee">https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d3217b15a19a4779c39b212358a5c71d725822ee</a> Acknowledgements: Red Hat would like to thank Gopal Reddy Kodudula of Nokia Siemens Networks for reporting this issue.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <3.15.2 | |
| SUSE Linux Enterprise Desktop with Beagle | =11-sp3 | |
| SUSE Linux Enterprise Real Time Extension | =11-sp3 | |
| SUSE Linux Enterprise Server | =10-sp4 | |
| SUSE Linux Enterprise Server | =11-sp3 | |
| suse linux enterprise server vmware | =11-sp3 | |
| Ubuntu Linux | =12.04 | |
| Debian GNU/Linux | =7.0 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 | |
| Ubuntu | =12.04 | |
| Debian | =7.0 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2014/06/27/11
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d3217b15a19a4779c39b212358a5c71d725822ee
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2
- https://bugzilla.redhat.com/show_bug.cgi?id=1113967
- https://github.com/torvalds/linux/commit/d3217b15a19a4779c39b212358a5c71d725822ee
- http://www.securityfocus.com/bid/68224
- http://secunia.com/advisories/59777
- http://secunia.com/advisories/60564
- http://www.debian.org/security/2014/dsa-2992
- http://www.ubuntu.com/usn/USN-2334-1
- http://www.ubuntu.com/usn/USN-2335-1
- http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
- http://linux.oracle.com/errata/ELSA-2014-3068.html
- http://linux.oracle.com/errata/ELSA-2014-3069.html
- http://secunia.com/advisories/59790
- http://secunia.com/advisories/60596
- https://launchpad.net/bugs/cve/CVE-2014-4667
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d3217b15a19a4779c39b212358a5c71d725822ee
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1113973
- https://rhn.redhat.com/errata/RHSA-2014-0913.html
- https://rhn.redhat.com/errata/RHSA-2014-1023.html
- https://rhn.redhat.com/errata/RHSA-2014-1167.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d3217b15a19a4779c39b212358a5c71d725822ee
- https://security-tracker.debian.org/tracker/CVE-2014-4667
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4667
- https://nvd.nist.gov/vuln/detail/CVE-2014-4667
- https://ubuntu.com/security/CVE-2014-4667
Frequently Asked Questions
What is the severity of CVE-2014-4667?
CVE-2014-4667 is rated as a medium severity vulnerability.
How do I fix CVE-2014-4667?
To fix CVE-2014-4667, upgrade to kernel versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.11-1, or 6.12.12-1.
What systems are affected by CVE-2014-4667?
CVE-2014-4667 affects Linux Kernel versions up to 3.15.2, SUSE Linux Enterprise Desktop 11 SP3, and Ubuntu 12.04.
What type of vulnerability is CVE-2014-4667?
CVE-2014-4667 is a vulnerability in the SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel.
Can CVE-2014-4667 lead to denial of service attacks?
Yes, CVE-2014-4667 could be exploited to cause denial of service conditions in affected systems.
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