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CVE-2018-1000127: memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that ca...

memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that can result in data corruption and deadlocks due to items existing in hash table being reused from free list. This attack appear to be exploitable via network connectivity to the memcached service. This vulnerability appears to have been fixed in 1.4.37 and later.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a memcached flaw fixed in version 1.4.37. A remote party with network access to the memcached service could trigger conditions leading to data corruption and deadlocks. That can disrupt caching and dependent applications, especially where memcached is reachable beyond trusted infrastructure.

Executive priority

Treat this as a practical reliability and data-integrity risk for affected memcached deployments. Prioritize internet-exposed or broadly reachable services first, then complete package updates across internal systems.

Technical view

CVE-2018-1000127 is an integer overflow in memcached items.c:item_free() before 1.4.37. The reported failure mode is reuse of hash-table items from the free list, causing data corruption and deadlocks. The source states exploitation appears possible through network connectivity to memcached.

Likely exposure

Exposure is most likely on systems running memcached before 1.4.37, including vendor-packaged builds addressed by Debian, Ubuntu, and Red Hat advisories. Risk is higher when memcached is reachable from untrusted networks or broad internal segments.

Exploitation context

The bundle does not show CISA KEV listing or active exploitation evidence. It does state the issue appears exploitable via network connectivity to the memcached service. No public exploit details are needed to assess exposure.

Researcher notes

The source bundle lacks CVSS, CWE, and detailed exploit evidence. The strongest technical anchors are the upstream issue, commit, release notes, and Linux vendor advisories. Validate distro backports rather than relying only on upstream version strings.

Mitigation direction

  • Upgrade memcached to 1.4.37 or later where upstream packages are used.
  • Apply the relevant Debian, Ubuntu, or Red Hat security update for packaged deployments.
  • Restrict memcached network access to trusted application hosts only.
  • Review vendor guidance for backported fixed package versions.

Validation and detection

  • Inventory hosts running memcached and record package or binary versions.
  • Confirm no deployment runs upstream memcached earlier than 1.4.37.
  • Verify vendor packages match the referenced fixed security advisories.
  • Check network controls limit memcached access to trusted clients.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2018-1000127 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
8Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.