CVE-2014-4943
First published: Mon Jul 14 2014(Updated: )
A flaw was found in the way pppol2tp_setsockopt() and pppol2tp_getsockopt() functions in the Linux kernel's PPP over L2TP implementation handled non-SOL_PPPOL2TP level. A local, unprivileged user could use this flaw to escalate their privileges on the system. Acknowledgements: Red Hat would like to thank Sasha Levin for reporting this issue.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.23<3.2.62 | |
| Linux Kernel | >=3.3<3.4.102 | |
| Linux Kernel | >=3.5<3.10.52 | |
| Linux Kernel | >=3.11<3.12.27 | |
| Linux Kernel | >=3.13<3.14.16 | |
| Linux Kernel | >=3.15<3.15.9 | |
| openSUSE | =11.4 | |
| SUSE Linux Enterprise Desktop with Beagle | =11-sp3 | |
| SUSE Linux Enterprise Server | =11-sp2 | |
| SUSE Linux Enterprise Server | =11-sp3 | |
| suse linux enterprise server vmware | =11-sp3 | |
| redhat enterprise Linux server aus | =6.2 | |
| Debian GNU/Linux | =7.0 | |
| Linux Kernel | <=3.15.6 | |
| 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 |
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Reference Links
- http://openwall.com/lists/oss-security/2014/07/17/1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
- https://bugzilla.redhat.com/show_bug.cgi?id=1119458
- https://github.com/torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
- http://linux.oracle.com/errata/ELSA-2014-3047.html
- http://linux.oracle.com/errata/ELSA-2014-3048.html
- http://linux.oracle.com/errata/ELSA-2014-0924.html
- http://www.securitytracker.com/id/1030610
- http://secunia.com/advisories/60071
- http://secunia.com/advisories/60220
- http://secunia.com/advisories/60011
- http://secunia.com/advisories/60380
- http://secunia.com/advisories/60393
- http://www.debian.org/security/2014/dsa-2992
- http://rhn.redhat.com/errata/RHSA-2014-1025.html
- http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
- http://www.exploit-db.com/exploits/36267
- http://osvdb.org/show/osvdb/109277
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://secunia.com/advisories/59790
- https://exchange.xforce.ibmcloud.com/vulnerabilities/94665
- https://launchpad.net/bugs/cve/CVE-2014-4943
- http://www.openwall.com/lists/oss-security/2014/07/17/1
- https://git.kernel.org/linus/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1120542
- https://rhn.redhat.com/errata/RHSA-2014-0923.html
- https://rhn.redhat.com/errata/RHSA-2014-0925.html
- https://rhn.redhat.com/errata/RHSA-2014-0924.html
- https://rhn.redhat.com/errata/RHSA-2014-1025.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
- https://security-tracker.debian.org/tracker/CVE-2014-4943
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4943
- https://nvd.nist.gov/vuln/detail/CVE-2014-4943
- https://ubuntu.com/security/CVE-2014-4943
Frequently Asked Questions
What is the severity of CVE-2014-4943?
CVE-2014-4943 is classified as a high severity vulnerability due to its potential to allow local unprivileged users to escalate their privileges.
How do I fix CVE-2014-4943?
To fix CVE-2014-4943, update the Linux kernel to a version that includes the security patch addressing this vulnerability.
Which Linux kernel versions are affected by CVE-2014-4943?
CVE-2014-4943 affects Linux kernel versions from 2.6.23 up to 3.15.6 as well as specific distributions such as openSUSE and SUSE Enterprise Linux.
Can exploitation of CVE-2014-4943 be prevented?
Exploitation of CVE-2014-4943 can be mitigated by ensuring that only authorized users are allowed to access the system and keeping the Linux kernel updated.
What components are implicated in CVE-2014-4943?
CVE-2014-4943 primarily concerns the pppol2tp_setsockopt() and pppol2tp_getsockopt() functions in the Linux kernel's PPP over L2TP implementation.
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