Executive Summary

Summary
Title Memcached vulnerability
Informations
Name USN-3963-1 First vendor Publication 2019-05-01
Vendor Ubuntu Last vendor Modification 2019-05-01
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
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Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04 - Ubuntu 18.10 - Ubuntu 18.04 LTS

Summary:

Memcached could be made to crash if it received specially crafted network traffic.

Software Description: - memcached: high-performance memory object caching system

Details:

It was discovered that Memcached incorrectly handled certain lru command messages. A remote attacker could possibly use this issue to cause Memcached to crash, resulting in a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04:
memcached 1.5.10-0ubuntu1.19.04.1

Ubuntu 18.10:
memcached 1.5.10-0ubuntu1.18.10.1

Ubuntu 18.04 LTS:
memcached 1.5.6-0ubuntu1.1

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3963-1
CVE-2019-11596

Package Information:
https://launchpad.net/ubuntu/+source/memcached/1.5.10-0ubuntu1.19.04.1
https://launchpad.net/ubuntu/+source/memcached/1.5.10-0ubuntu1.18.10.1
https://launchpad.net/ubuntu/+source/memcached/1.5.6-0ubuntu1.1

Original Source

Url : http://www.ubuntu.com/usn/USN-3963-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 21
Os 3

Snort® IPS/IDS

Date Description
2020-01-16 Memcached lru mode NULL dereference attempt
RuleID : 52477 - Revision : 1 - Type : SERVER-OTHER
2020-01-16 Memcached lru temp_ttl NULL dereference attempt
RuleID : 52476 - Revision : 1 - Type : SERVER-OTHER
2019-09-24 Memcached lru mode NULL dereference attempt
RuleID : 51186 - Revision : 1 - Type : SERVER-OTHER
2019-09-24 Memcached lru temp_ttl NULL dereference attempt
RuleID : 51185 - Revision : 1 - Type : SERVER-OTHER

Alert History

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0
Date Informations
2019-05-01 17:18:39
  • First insertion