CVE-2018-20511 — An issue was discovered in the Linux kernel before 4
An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT i
Published
2018-12-27T14:00:00.000Z
Last modified
2024-08-05T12:05:16.908Z
01What is this vulnerability?
An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2018-12-27T14:00:00.000Z
- Last modified: 2024-08-05T12:05:16.908Z
09References
- git.kernel.org — http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9824df…
- lkml.org — https://lkml.org/lkml/2018/9/27/480
- github.com — https://github.com/torvalds/linux/commit/9824dfae5741275473a23a7ed5756c7b6efacc9…
- cdn.kernel.org — https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.11
- www.securityfocus.com — http://www.securityfocus.com/bid/106347
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- usn.ubuntu.com — https://usn.ubuntu.com/4094-1/
- usn.ubuntu.com — https://usn.ubuntu.com/4118-1/
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