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.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2018:2290 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2018/03/msg00031.html | third party advisory mailing list |
| https://github.com/memcached/memcached/commit/a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00 | third party advisory patch |
| https://usn.ubuntu.com/3601-1/ | third party advisory vendor advisory |
| https://www.debian.org/security/2018/dsa-4218 | third party advisory vendor advisory |
| https://github.com/memcached/memcached/wiki/ReleaseNotes1437 | third party advisory release notes |
| https://github.com/memcached/memcached/issues/271 | third party advisory |