Security Resilience

CVE-2023-5313

Race Condition in Phpkobo Ajax Poll Script 3.18

Public PoCRace Condition
Published
30 September 2023
Modified
21 November 2024
CVSS Score v3.1 5.3
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:L/A:N
EPSS Score 0.0058 47th percentile
Risk Priority 45 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-2023-5313 is a medium-severity Improper Enforcement of a Single, Unique Action (CWE-837) vulnerability in Phpkobo Ajax Poll Script. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Protocol or Service Impersonation (T1001.003); ranked at the 47th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

A06:2025 Insecure Design

EU & UK References

Vulnerability Data

A vulnerability classified as problematic was found in phpkobo Ajax Poll Script 3.18. Affected by this vulnerability is an unknown functionality of the file ajax-poll.php of the component Poll Handler. The manipulation leads to improper enforcement of a single, unique…

more

action. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-240949 was assigned to this vulnerability.

CWE(s)
CWE-837CWE-362

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.003 Protocol or Service Impersonation Command And Control
Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.
attack.mitre.org →
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
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 →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1010 Application Window Discovery Discovery
Adversaries may attempt to get a listing of open application windows.
attack.mitre.org →
T1012 Query Registry Discovery
Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-41448Same vendor: Phpkobo
CVE-2023-41453Same vendor: Phpkobo
CVE-2023-41447Same vendor: Phpkobo
CVE-2023-41451Same vendor: Phpkobo
CVE-2023-41445Same vendor: Phpkobo
CVE-2023-41446Same vendor: Phpkobo
CVE-2023-41452Same vendor: Phpkobo
CVE-2023-41449Same vendor: Phpkobo
CVE-2023-41450Same vendor: Phpkobo
CVE-2026-105850Shared CWE-837

Affected Assets

phpkobo
ajax poll script
3.18

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)
  • V6.3.3
  • V6.5.1

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AU-8 Time Stamps
addresses: CWE-362

Accurate timestamps from internal clocks enable detection of race conditions by providing reliable event ordering in audit logs.

PL-6 Security-related Activity Planning
addresses: CWE-362

Coordination of concurrent security activities reduces the probability that shared resources will be accessed simultaneously without proper synchronization.

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.AA-05 partial match
blocks

Authorization policy enforcement can include rules that restrict actions to a single use.

PR.IR-01 partial match
blocks

Logical access controls can incorporate mechanisms that block replay or repeated actions.

PR.PS-05 partial match
blocks

Preventing execution of unauthorized or duplicate actions directly addresses single-use enforcement.

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.5.15 Access control partial match
degrades

Access-control rules can enforce single-use or uniqueness constraints, but the control is broader than this specific weakness.

A.5.18 Access rights partial match
degrades

Managing access rights can include rules that limit an action to one occurrence, yet the control addresses rights in general.

A.5.21 Managing information security in the ICT supply chain partial match
removes
A.8.25 Secure development life cycle partial match
blocks

Secure SDLC practices can require design controls for single-use actions, but the control addresses the entire lifecycle.

A.8.26 Application security requirements partial match
blocks

Application-security requirements can specify single-action enforcement, yet the control is wider in scope.

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

Secure architecture principles require proper synchronization and resource isolation, addressing the root cause of CWE-362.

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-362, a class-level weakness, and none of its children carries one either.

References