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Threat Response Auto PullApplication · Proofpoint

CVE-2023-2820

MEDIUM · 6.8 CVSS v3.1 Published 2023-06-14
Fix available
A fix is available. Upgrade to 5.10.0 or later.
See remediation →
73/100
Remediation priority · Elevated
No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
An information disclosure vulnerability in the faye endpoint in Proofpoint Threat Response / Threat Response Auto-Pull (PTR/TRAP) could be used by an attacker on an adjacent network to obtain credentials to integrated services via a man-in-the-middle position or cryptanalysis of the session traffic. An attacker could use these credentials to impersonate PTR/TRAP to these services. All versions prior to 5.10.0 are affected. 

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

An information disclosure vulnerability exists in the faye endpoint of Proofpoint Threat Response/Threat Response Auto-Pull (PTR/TRAP). An attacker positioned on an adjacent network can intercept session traffic and obtain credentials to integrated services through man-in-the-middle attacks or cryptanalysis. These stolen credentials enable the attacker to impersonate PTR/TRAP when communicating with those services.

MitigationUpgrade PTR/TRAP to version 5.10.0 or later to remediate this vulnerability. Until then, network segmentation and monitoring for anomalous traffic to the faye endpoint may provide interim risk reduction.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Threat Response Auto PullApplication
Affected:< 5.10.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify PTR/TRAP installed version
    Locate the Proofpoint Threat Response Auto-Pull installation and check the software version. This is typically available in the product's admin interface under System > About, or via command line if you have direct server access.
    Affected if The installed version is lower than 5.10.0, indicating the vulnerable version range.
  2. Verify faye endpoint is enabled
    Check the PTR/TRAP configuration to confirm whether the faye endpoint is enabled and accessible. The faye endpoint is typically exposed on a specific path such as /faye or /threat-response/faye within the web interface.
    Affected if The faye endpoint is enabled and exposed, making it reachable for interception attacks.
  3. Check network accessibility of the faye endpoint
    Determine if the PTR/TRAP web interface (including the faye endpoint) is accessible from network segments that are not fully trusted. Verify whether the service is bound to trusted-only interfaces or is exposed to adjacent network segments.
    Affected if The faye endpoint is reachable from network segments accessible to adjacent attackers, rather than only from trusted internal networks.
  4. Review logs for suspicious session interception indicators
    Examine PTR/TRAP and surrounding network device logs for unusual patterns that may indicate man-in-the-middle activity, unexpected SSL/TLS certificate warnings, or anomalous traffic patterns targeting the faye endpoint.
    Affected if Logs reveal indicators of session interception attempts or credential exposure related to faye endpoint traffic.

You are affected if PTR/TRAP version is below 5.10.0 AND the faye endpoint is enabled and accessible from an adjacent network segment, allowing an attacker to intercept traffic and harvest credentials.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 5.10.0 or later
Fixed in 5.10.0
Interim mitigation

Upgrade PTR/TRAP to version 5.10.0 or later to remediate this vulnerability. Until then, network segmentation and monitoring for anomalous traffic to the faye endpoint may provide interim risk reduction.

Recommended fix High confidence

5.10.0

  1. Back up current PTR/TRAP configuration and data according to Proofpoint backup procedures
  2. Download Threat Response Auto-Pull version 5.10.0 from the official Proofpoint download portal or support site
  3. Review the Proofpoint upgrade guide for PTR/TRAP 5.10.0 for version-specific installation prerequisites
  4. Execute the upgrade procedure following the documented upgrade path for your current version
  5. After upgrade completion, verify the faye endpoint is functioning correctly and the version shows 5.10.0
  6. Validate that integrated service credentials are no longer exposed through the faye endpoint

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Threat Response Auto Pull Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-2820 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data