CVE-2017-9951

moderate-risk
Published 2017-07-17

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.

Do I need to act?

~
1.7% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Memcached

References (12)

http://www.securityfocus.com/bid/99874
Third Party Advisory https://github.com/memcached/memcached/wiki/ReleaseNotes1439
Mailing List https://groups.google.com/forum/message/raw?msg=memcached/ubGWrkmrr4E/nrm1SeVJAQ...
https://usn.ubuntu.com/3588-1/
https://www.debian.org/security/2018/dsa-4218
Exploit https://www.twistlock.com/2017/07/13/cve-2017-9951-heap-overflow-memcached-serve...
http://www.securityfocus.com/bid/99874
Third Party Advisory https://github.com/memcached/memcached/wiki/ReleaseNotes1439
Mailing List https://groups.google.com/forum/message/raw?msg=memcached/ubGWrkmrr4E/nrm1SeVJAQ...
https://usn.ubuntu.com/3588-1/
https://www.debian.org/security/2018/dsa-4218
Exploit https://www.twistlock.com/2017/07/13/cve-2017-9951-heap-overflow-memcached-serve...
35
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 4/34 · Minimal
Exposure 5/34 · Minimal