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CVE-2017-9951

Publication date 17 July 2017

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

From the Ubuntu Security Team

Daniel Shapira discovered an integer overflow issue in Memcached. A remote attacker could use this to cause a denial of service (daemon crash).

Status

Package Ubuntu Release Status
memcached 17.10 artful
Fixed 1.4.33-1ubuntu3.2
17.04 zesty Ignored end of life
16.10 yakkety Ignored end of life
16.04 LTS xenial
Fixed 1.4.25-2ubuntu1.3
14.04 LTS trusty
Fixed 1.4.14-0ubuntu9.2

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
memcached

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H