Security Resilience

CVE-2023-4127

Race Condition in Answer ≤ 1.1.1

Public PoCRace Condition
Published
03 August 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 5.9
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS Score 0.0049 40th percentile
Risk Priority 46 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-2023-4127 is a medium-severity Race Condition within a Thread (CWE-366) vulnerability in Answer Answer. Its CVSS base score is 5.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked at the 40th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

Race Condition within a Thread in GitHub repository answerdev/answer prior to v1.1.1.

CWE(s)
CWE-366

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
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 →
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
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 →
T1010 Application Window Discovery Discovery
Adversaries may attempt to get a listing of open application windows.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-0744Same product: Answer Answer
CVE-2023-1240Same product: Answer Answer
CVE-2023-4125Same product: Answer Answer
CVE-2023-1243Same product: Answer Answer
CVE-2023-0741Same product: Answer Answer
CVE-2023-0743Same product: Answer Answer
CVE-2023-1244Same product: Answer Answer
CVE-2023-1974Same product: Answer Answer
CVE-2023-4126Same product: Answer Answer
CVE-2023-0739Same product: Answer Answer

Affected Assets

answer
answer
≤ 1.1.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V15.4.2
  • V15.4.3
  • V17.2.6

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 synchronization primitives and concurrency analysis that prevent intra-thread race conditions.

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

A.8.25 mandates secure SDLC practices (secure coding guidelines, security requirements, checkpoints, testing including code scans/penetration tests, and developer training) that reach race conditions in multithreaded code, but leaves a bounded remainder where implementation is incomplete or the specific synchronization flaw slips past the chosen methodology and tests.

A.8.26 Application security requirements partial match
blocks

A.8.26 only requires that race-condition-relevant requirements (e.g. thread safety, synchronization) be identified during requirements gathering; it performs no enforcement, design, or implementation act that stops the CWE-366 condition from being exploitable when present.

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

Secure architecture principles address concurrent access and resource synchronization.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly require proper synchronization primitives to prevent race conditions.

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

Security testing can detect race conditions through concurrency and stress testing.

References