NULL Pointer Dereference Affecting memcached package, versions <0:1.4.39-3.el7ost
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-MEMCACHED-5259210
- published26 Jul 2021
- disclosed10 Apr 2019
Introduced: 10 Apr 2019
CVE-2019-11596 (opens in a new tab)How to fix?
Upgrade RHEL:7 memcached to version 0:1.4.39-3.el7ost or higher.
This issue was patched in RHSA-2020:5583.
NVD Description
Note: Versions mentioned in the description apply only to the upstream memcached package and not the memcached package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2019-11596
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UUE3QBMP5UWTXMPKJREUICH6DIK6SOBX/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y2CCWRM4LHB253KG5SPOKRVDCXQX5VZR/
- https://github.com/memcached/memcached/commit/d35334f368817a77a6bd1f33c6a5676b2c402c02
- https://github.com/memcached/memcached/compare/ee1cfe3...50bdc9f
- https://github.com/memcached/memcached/issues/474
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00060.html
- https://usn.ubuntu.com/3963-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UUE3QBMP5UWTXMPKJREUICH6DIK6SOBX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y2CCWRM4LHB253KG5SPOKRVDCXQX5VZR/