7.5
HIGH
CVE-2017-9951
Memcached Buffer Over-Read Denial of Service
Description

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.

INFO

Published Date :

July 17, 2017, 1:18 p.m.

Last Modified :

Oct. 3, 2019, 12:03 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2017-9951 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Memcached memcached
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2017-9951.

URL Resource
http://www.securityfocus.com/bid/99874
https://github.com/memcached/memcached/wiki/ReleaseNotes1439 Third Party Advisory
https://groups.google.com/forum/message/raw?msg=memcached/ubGWrkmrr4E/nrm1SeVJAQAJ Mailing List Third Party Advisory
https://usn.ubuntu.com/3588-1/
https://www.debian.org/security/2018/dsa-4218
https://www.twistlock.com/2017/07/13/cve-2017-9951-heap-overflow-memcached-server-1-4-38-twistlock-vulnerability-report/ Exploit Technical Description Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2017-9951 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-9951 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-119 NVD-CWE-noinfo
  • CVE Modified by [email protected]

    Jun. 08, 2018

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2018/dsa-4218 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 25, 2018

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/99874 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 16, 2018

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/3588-1/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Aug. 15, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://groups.google.com/forum/message/raw?msg=memcached/ubGWrkmrr4E/nrm1SeVJAQAJ No Types Assigned https://groups.google.com/forum/message/raw?msg=memcached/ubGWrkmrr4E/nrm1SeVJAQAJ Mailing List, Third Party Advisory
    Changed Reference Type https://github.com/memcached/memcached/wiki/ReleaseNotes1439 No Types Assigned https://github.com/memcached/memcached/wiki/ReleaseNotes1439 Third Party Advisory
    Changed Reference Type https://www.twistlock.com/2017/07/13/cve-2017-9951-heap-overflow-memcached-server-1-4-38-twistlock-vulnerability-report/ No Types Assigned https://www.twistlock.com/2017/07/13/cve-2017-9951-heap-overflow-memcached-server-1-4-38-twistlock-vulnerability-report/ Exploit, Technical Description, Third Party Advisory
    Added CWE CWE-119
    Added CPE Configuration OR *cpe:2.3:a:memcached:memcached:1.4.38:*:*:*:*:*:*:* (and previous)
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2017-9951 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2017-9951 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.96 }} 0.01%

score

0.83453

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability