Bug 1706001 (CVE-2019-11596) - CVE-2019-11596 memcached: null-pointer dereference in "lru mode" and "lru temp_ttl" causing denial of service
Summary: CVE-2019-11596 memcached: null-pointer dereference in "lru mode" and "lru tem...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-11596
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1706002 1709093 1709094 1709095 1709104 1709408
Blocks: 1706006
TreeView+ depends on / blocked
 
Reported: 2019-05-03 11:40 UTC by Dhananjay Arunesh
Modified: 2021-02-16 21:59 UTC (History)
17 users (show)

Fixed In Version: memcached 1.5.14
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2020-04-28 16:32:45 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1576 0 None None None 2020-04-28 15:25:33 UTC
Red Hat Product Errata RHSA-2020:5583 0 None None None 2020-12-16 14:01:32 UTC

Description Dhananjay Arunesh 2019-05-03 11:40:30 UTC 
In memcached before 1.5.14, a NULL pointer dereference was found in the "lru
mode" and "lru temp_ttl" commands. This causes a denial of service when parsing
crafted lru command messages in process_lru_command in memcached.c.

Reference:
https://github.com/memcached/memcached/issues/474

Upstream commit:
https://github.com/memcached/memcached/compare/ee1cfe3...50bdc9f
https://github.com/memcached/memcached/commit/d35334f368817a77a6bd1f33c6a5676b2c402c02
Comment 1 Dhananjay Arunesh 2019-05-03 11:41:04 UTC 
Created memcached tracking bugs for this issue:

Affects: fedora-all [bug 1706002]
Comment 2 Joshua Padman 2019-05-13 04:01:09 UTC 
The vulnerable code is not present in the version of memcached that ships for Red Hat OpenStack Platform 9 (memcached-1.4.15-9.4.el7ost). All other supported versions are vulnerable.
Comment 6 Joshua Padman 2019-05-13 04:22:39 UTC 
Created memcached tracking bugs for this issue:

Affects: openstack-rdo [bug 1709104]
Comment 7 Riccardo Schirone 2019-05-13 14:11:07 UTC 
Bugs introduced in:
https://github.com/memcached/memcached/commit/dc5f65d38a4c8f8b51e0dace323374ec76fcc647
https://github.com/memcached/memcached/commit/d67cfbf9922f7f4be6ee7315b0877c796b182e7d
Comment 9 Riccardo Schirone 2019-05-13 14:24:05 UTC 
Statement:

The vulnerable code is not present in the versions of memcached as shipped in Red Hat Enterprise Linux 6 and 7, so they are not affected by this flaw.
Comment 13 errata-xmlrpc 2020-04-28 15:25:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1576 https://access.redhat.com/errata/RHSA-2020:1576
Comment 14 Product Security DevOps Team 2020-04-28 16:32:45 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-11596
Comment 17 errata-xmlrpc 2020-12-16 14:01:24 UTC 
This issue has been addressed in the following products:

  Red Hat OpenStack Platform 13.0 (Queens)
  Red Hat OpenStack Platform 13.0 (Queens) for RHEL 7.6 EUS

Via RHSA-2020:5583 https://access.redhat.com/errata/RHSA-2020:5583
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