Integer overflow in Memcached
CVE-2018-1000127
memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that can result in data corruption and deadlocks due to items existing in hash table being reused from free list. This attack appear to be exploitable via network connectivity to the memcached service. This vulnerability appears to have been fixed in 1.4.37 and later.
Vulnerability class: Integer Overflow
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: 0.023 (82.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.023 · change: +0.000
Affected products
- Memcached
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 7.0, 8.0, 9.0
- Red Hat OpenStack — versions 10
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2018:2290 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/03/msg00031.html (mailing-list, Mailing List, Third Party Advisory)
- github.com/memcached/memcached/commit/a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00 (Patch, Third Party Advisory)
- usn.ubuntu.com/3601-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4218 (vendor-advisory, Third Party Advisory)
- github.com/memcached/memcached/wiki/ReleaseNotes1437 (Third Party Advisory, Release Notes)
- github.com/memcached/memcached/issues/271 (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-1000127?
- CVE-2018-1000127 is a high-severity vulnerability in Memcached, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-03-13.
- How severe is CVE-2018-1000127?
- High severity. CVSS v3 base score is 7.5 out of 10.