CVE-2014-4943
Description
The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Linux Kernel 3.15.6 - PPP-over-L2TP Socket Level Handling Crash (PoC)
OS impact
Linux kernel Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | 3.2.62 |
SUSE Affected 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 11.4 | Affected | — |
| 11 | Affected | — |
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.14.13-1 |
| sid | Fixed | 3.14.13-1 |
| forky | Fixed | 3.14.13-1 |
| bullseye | Fixed | 3.14.13-1 |
| bookworm | Fixed | 3.14.13-1 |
| 7.0 | Affected | — |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
- http://linux.oracle.com/errata/ELSA-2014-0924.html
- http://linux.oracle.com/errata/ELSA-2014-3047.html
- http://linux.oracle.com/errata/ELSA-2014-3048.html
- 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/2015-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://openwall.com/lists/oss-security/2014/07/17/1
- http://osvdb.org/show/osvdb/109277
- http://rhn.redhat.com/errata/RHSA-2014-1025.html
- http://secunia.com/advisories/59790
- http://secunia.com/advisories/60011
- http://secunia.com/advisories/60071
- http://secunia.com/advisories/60220
- http://secunia.com/advisories/60380
- http://secunia.com/advisories/60393
- http://www.debian.org/security/2014/dsa-2992
- http://www.exploit-db.com/exploits/36267
- http://www.securitytracker.com/id/1030610
- https://bugzilla.redhat.com/show_bug.cgi?id=1119458
- https://exchange.xforce.ibmcloud.com/vulnerabilities/94665
- https://github.com/torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
- https://security-tracker.debian.org/tracker/CVE-2014-4943
CWEs
CWE-269
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.