// For flags

CVE-2024-52521

Nextcloud Server has a potential hash collision for background jobs could skip queuing them

Severity Score

2.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Nextcloud Server is a self hosted personal cloud system. MD5 hashes were used to check background jobs for their uniqueness. This increased the chances of a background job with arguments falsely being identified as already existing and not be queued for execution. By changing the Hash to SHA256 the probability was heavily decreased. It is recommended that the Nextcloud Server is upgraded to 28.0.10, 29.0.7 or 30.0.0.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-11-11 CVE Reserved
  • 2024-11-15 CVE Published
  • 2024-11-15 CVE Updated
  • 2024-11-16 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-328: Use of Weak Hash
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nextcloud
Search vendor "Nextcloud"
 Security-advisories
Search vendor "Nextcloud" for product "Security-advisories"
 >= 28.0.0 < 28.0.10
Search vendor "Nextcloud" for product "Security-advisories" and version " >= 28.0.0 < 28.0.10"
en
Affected
Nextcloud
Search vendor "Nextcloud"
 Security-advisories
Search vendor "Nextcloud" for product "Security-advisories"
 >= 29.0.0 < 29.0.7
Search vendor "Nextcloud" for product "Security-advisories" and version " >= 29.0.0 < 29.0.7"
en
Affected