Vulnerability Details : CVE-2023-25167
Discourse is an open source discussion platform. In affected versions a malicious user can cause a regular expression denial of service using a carefully crafted git URL. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this issue.
Vulnerability category: Denial of service
Products affected by CVE-2023-25167
- cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*
- cpe:2.3:a:discourse:discourse:3.1.0:beta1:*:*:beta:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-25167
1.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-25167
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
2.1
|
3.6
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2023-25167
-
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.Assigned by: security-advisories@github.com (Primary)
References for CVE-2023-25167
-
https://github.com/discourse/discourse/security/advisories/GHSA-4w55-w26q-r35w
ReDos installing themes via git · Advisory · discourse/discourse · GitHubVendor Advisory
-
https://github.com/discourse/discourse/commit/ec4c30270887366dc28788bc4ab8a22a098573cd
SECURITY: Prevent ReDOS by making the SSH url regex unambiguous (#20001) · discourse/discourse@ec4c302 · GitHubPatch
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