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CVE Record

CVE-2020-24719: Exposed Erlang Cookie could lead to Remote Command Execution (RCE) attack.

Exposed Erlang Cookie could lead to Remote Command Execution (RCE) attack. Communication between Erlang nodes is done by exchanging a shared secret (aka "magic cookie"). There are cases where the magic cookie is included in the content of the logs. An attacker can use the cookie to attach to an Erlang node and run OS level commands on the system running the Erlang node. Affects version: 6.5.1. Fix version: 6.6.0.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This CVE describes a remote command execution risk when an Erlang shared secret, called the magic cookie, is written into logs. If an attacker obtains that cookie, they may be able to join the Erlang node cluster trust boundary and run operating-system commands. The source names affected version 6.5.1 and fix version 6.6.0.

Executive priority

Prioritize remediation for affected 6.5.1 systems because the described impact is OS-level command execution after secret exposure. Urgency is highest where logs are broadly accessible, centralized, or shared with third parties.

Technical view

Erlang node communication authenticates with a shared magic cookie. The issue is exposure of that cookie in log content. The CVE description says an attacker can use the cookie to attach to an Erlang node and execute OS-level commands. Structured affected-product metadata is incomplete, but the reference points to Couchbase security resources.

Likely exposure

Most likely exposure is deployments of the affected 6.5.1 version where logs contain Erlang magic cookies and attackers can access those logs or node communication paths. The source bundle does not provide product CPEs, deployment details, or CVSS scoring.

Exploitation context

The bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation depends on obtaining the exposed shared secret and reaching the relevant Erlang node trust boundary. No exploit maturity or public exploit evidence is provided.

Researcher notes

Evidence is limited to the CVE description and vendor reference. The affected product field in the supplied record is not populated, so do not expand scope beyond systems matching the vendor guidance and version statement. No CVSS, CWE, or exploitation evidence is provided.

Mitigation direction

  • Upgrade affected 6.5.1 deployments to fixed version 6.6.0 where applicable.
  • Review Couchbase vendor security guidance before applying environment-specific changes.
  • Treat exposed Erlang cookies as compromised secrets and rotate them per vendor process.
  • Restrict access to sensitive logs and Erlang node communication paths.
  • Remove exposed cookies from log stores and downstream systems where safely supported.

Validation and detection

  • Inventory systems running the affected 6.5.1 version.
  • Verify applicable systems are upgraded to version 6.6.0 or later.
  • Review log stores for exposed Erlang magic cookie values.
  • Confirm only authorized operators can read sensitive logs.
  • Confirm Erlang node communication is not unnecessarily exposed.
Prepared
Confidence
medium
Sources
3

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

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Execution behavior lookup

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description · low confidence lookup

Credential and access behavior lookup

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cve · low confidence lookup

CVE-2020-24719 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
2Source 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

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