Security Resilience

CVE-2023-2968

Proxy Project Proxy 2.0.0 – 2.1.1

Public PoC
Published
30 May 2023
Modified
08 October 2026
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.015 73th percentile
Risk Priority 62 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-2968 is a high-severity Improper Handling of Undefined Values (CWE-232) vulnerability in Proxy Project Proxy. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 27% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

A remote attacker can trigger a denial of service in the socket.remoteAddress variable, by sending a crafted HTTP request. Usage of the undefined variable raises a TypeError exception.

CWE(s)
CWE-232NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control
Adversaries may obfuscate command and control traffic to make it more difficult to detect.
attack.mitre.org →
T1001.002 Steganography Command And Control
Adversaries may use steganographic techniques to hide command and control traffic to make detection efforts more difficult.
attack.mitre.org →
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
attack.mitre.org →
T1008 Fallback Channels Command And Control
Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-40775Shared CWE-232
CVE-2023-36848Shared CWE-232
CVE-2025-20192Shared CWE-232
CVE-2025-20314Shared CWE-232
CVE-2026-92088Shared CWE-232
CVE-2023-39915Shared CWE-232
CVE-2023-39914Shared CWE-232
CVE-2026-21689Shared CWE-232

Affected Assets

proxy project
proxy
2.0.0 — 2.1.1

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly require proper input validation and error handling for undefined values.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.19 Installation of software on operational systems partial match
removes
A.8.25 Secure development life cycle partial match
blocks

Secure development life cycle requires handling of invalid/undefined inputs during design and coding.

A.8.26 Application security requirements partial match
blocks

A.8.26 only requires that security requirements (including resilience against injections or input validation) be identified and specified during development or acquisition; it does not itself enforce, implement or prevent the undefined-value handling flaw from being introduced or exploited.

A.8.27 Secure system architecture and engineering principles partial match
blocks

A.8.27 mandates security-by-design principles (e.g. least privilege, fail securely, distrust external input, security-oriented design reviews) that reach some but not most instances of mishandling undefined values; the weakness can still be introduced in code that follows the principles but is incomplete on parameter validation or state handling.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly require defensive checks for undefined or unsupported parameter values.

A.8.29 Security testing in development and acceptance partial match
finds

Security testing in development can detect missing handling of undefined values before release.

References