Resource Exhaustion Affecting openafs package, versions <1.8.2-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Sept 2018
- disclosed12 Sept 2018
Introduced: 12 Sep 2018
CVE-2018-16949 (opens in a new tab)How to fix?
Upgrade Debian:unstable openafs to version 1.8.2-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openafs package and not the openafs package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several data types used as RPC input variables were implemented as unbounded array types, limited only by the inherent 32-bit length field to 4 GB. An unauthenticated attacker could send, or claim to send, large input values and consume server resources waiting for those inputs, denying service to other valid connections.
References
- https://security-tracker.debian.org/tracker/CVE-2018-16949
- http://openafs.org/pages/security/OPENAFS-SA-2018-003.txt
- https://www.debian.org/security/2018/dsa-4302
- https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html
- http://www.securityfocus.com/bid/106375
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-16949