ExploitCVE-2024-6940
Improper Control of Generation of Code ('Code Injection') (CWE-94)
Summary
A critical vulnerability has been identified in DedeCMS version 5.7.114, specifically affecting an unknown part of the file article_template_rand.php. This vulnerability allows for code injection and can be exploited remotely without requiring user interaction. The attack complexity is considered low, but it does require high privileges to execute. The vulnerability has been publicly disclosed, potentially increasing the risk of exploitation.
Impact
If successfully exploited, this vulnerability could allow an attacker to inject and execute arbitrary code on the affected DedeCMS system. The potential impacts include: 1. Unauthorized access: Attackers could gain high-level access to the system. 2. Data manipulation: The integrity of the website content and database could be compromised. 3. System compromise: Attackers might be able to take control of the server hosting DedeCMS. 4. Information disclosure: Sensitive data stored in the CMS could be exposed. While the CVSS v4 base score is 5.1 (Medium severity), the vulnerability is classified as critical, indicating its potential for severe consequences. The CVSS v3.1 base score is higher at 7.2, reflecting a High severity rating. This discrepancy suggests that the vulnerability's impact could be significant despite the lower v4 score.
Exploitation
One proof-of-concept exploit is available on gitee.com. There is no evidence of proof of exploitation at the moment.
Patch
As of the latest information available, no official patch has been released for this vulnerability. The vendor (DedeCMS) was contacted about this issue but did not respond, suggesting that an official fix may not be immediately available. Users of DedeCMS 5.7.114 should consider this vulnerability unpatched and take appropriate mitigation measures.
Mitigation
Given the absence of an official patch, consider implementing the following mitigation strategies: 1. Access Control: Strictly limit access to the affected file (article_template_rand.php) and the DedeCMS admin interface to only trusted, necessary users. 2. Input Validation: Implement rigorous input validation and sanitization for all user-supplied data that interacts with the affected file. 3. Network Segmentation: If possible, place the DedeCMS server behind a reverse proxy or WAF to filter malicious requests. 4. Monitoring: Enhance logging and monitoring for the DedeCMS installation, particularly focusing on activities related to article_template_rand.php. 5. Temporary Measures: If feasible, consider temporarily disabling the affected functionality without disrupting critical operations. 6. Update Strategy: Regularly check for updates from DedeCMS and be prepared to apply a patch as soon as it becomes available. 7. Alternative Solutions: Evaluate the possibility of upgrading to a newer, unaffected version of DedeCMS if available, or consider alternative CMS solutions if the risk is deemed too high. Given the critical nature of this vulnerability and its potential for remote exploitation, prioritize these mitigation efforts and closely monitor the system for any signs of compromise.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/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:X
Timeline
Feedly found the first article mentioning CVE-2024-6940. See article
Feedly estimated the CVSS score as HIGH
NVD published the first details for CVE-2024-6940
A CVSS base score of 4.7 has been assigned.
EPSS Score was set to: 0.05% (Percentile: 16%)
This CVE started to trend in security discussions
This CVE stopped trending in security discussions
A CVSS base score of 7.2 has been assigned.