CVE-2024-13109
Access Control in Kaoshifeng Yunfan Learning Examination System 1.9.2
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2024-13109 is a medium-severity Incorrect Privilege Assignment (CWE-266) vulnerability in Kaoshifeng Yunfan Learning Examination System. Its CVSS base score is 6.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); 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.
The strongest mitigations our analysis identified map to AC-24 (Access Control Decisions) and AC-25 (Reference Monitor) — see the control section below for these in your framework.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-51350
Vulnerability Data
A vulnerability was found in Beijing Yunfan Internet Technology Yunfan Learning Examination System 1.9.2. It has been rated as critical. This issue affects some unknown processing of the file /doc.html. The manipulation leads to improper authorization. The attack may be…
more
initiated remotely. The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 8 hardening rules · 6 OS baselines
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Mitigating Controls (NIST 800-53 r5) AI
Mandates that access-control decisions are made and applied to each request before access occurs.
Requires a tamperproof, always-invoked reference monitor that performs authorization checks.
Directly requires enforcement of approved authorizations for every access request, stopping improper or missing checks.
Least privilege directly requires that only the minimal necessary privileges are assigned to each actor.
Account management defines and authorizes the exact privileges granted to each account or role.
Separation of duties constrains which privilege combinations may be assigned to any actor.
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.
Directly enforces least-privilege policy definition, management, and review that prevents incorrect privilege assignments.
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.5.1 only requires the existence of an overarching policy and topic-specific policies (including on access control); it does not itself perform or enforce any authorization check, so the CWE-285 weakness can still be exploited.
A.5.15 directly requires determining access needs, defining/enforcing topic-specific access control policy and rules (including need-to-know, privilege restrictions, segregation, formal authorization, role-based mapping, and consistency with classification), which stops most incorrect privilege assignments from being exploitable; the bounded remainder is incorrect assignments that arise from flawed implementation of those rules rather than from their absence.
A.5.18's provisioning, review, revocation and SoD rules (esp. a,b,c,f,i,j) directly stop most incorrect privilege assignments from being granted or persisting, with a bounded remainder in flawed implementation of the authorization step itself (see 5.9/5.15 dependency)
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (higher-evidence rows only; rows rated `none` are excluded).
Oracle Linux 8 (1 rule)
- V-248551 A sticky bit must be set on all OL 8 public directories to prevent unauthorized and unintended information transferred via shared system resources. blocks CWE-266
Oracle Linux 9 (1 rule)
- V-271779 OL 9 must be configured so that a sticky bit must be set on all public directories. blocks CWE-266
RHEL 8 (1 rule)
- V-230243 A sticky bit must be set on all RHEL 8 public directories to prevent unauthorized and unintended information transferred via shared system resources. blocks CWE-266
RHEL 9 (1 rule)
- V-257929 A sticky bit must be set on all RHEL 9 public directories. blocks CWE-266
Ubuntu 22.04 (2 rules)
- V-260513 Ubuntu 22.04 LTS must set a sticky bit on all public directories to prevent unauthorized and unintended information transferred via shared system resources. blocks CWE-266
- V-260559 Ubuntu 22.04 LTS must ensure only users who need access to security functions are part of sudo group. blocks CWE-266
Ubuntu 24.04 (2 rules)
- V-270748 Ubuntu 24.04 LTS must ensure only users who need access to security functions are part of sudo group. blocks CWE-266
- V-270750 Ubuntu 24.04 LTS must set a sticky bit on all public directories to prevent unauthorized and unintended information transferred via shared system resources. blocks CWE-266