Vulnerability in Memcached
CVE-2017-9951
The try_read_command function in memcached.c in memcached before 1.4.39 allows remote attackers to cause a denial of service (segmentation fault) via a request to add/set a key, which makes a comparison between signed and unsigned int and triggers a heap-based buffer over-read. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-8705.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.042 (90.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
References
- usn.ubuntu.com/3588-1/ (vendor-advisory)
- github.com/memcached/memcached/wiki/ReleaseNotes1439 (Third Party Advisory)
- www.securityfocus.com/bid/99874 (vdb-entry)
- www.debian.org/security/2018/dsa-4218 (vendor-advisory)
- www.twistlock.com/2017/07/13/cve-2017-9951-heap-overflow-memcached-server-1-4-3… (Technical Description, Exploit, Third Party Advisory)
- groups.google.com/forum/message/raw (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-9951?
- CVE-2017-9951 is a high-severity vulnerability in Memcached. CVSS score: 7.5/10. Published 2017-07-17.
- How severe is CVE-2017-9951?
- High severity. CVSS v3 base score is 7.5 out of 10.