Resource exhaustion in Discourse
CVE-2023-47120
Discourse is an open source platform for community discussion. In versions 3.1.0 through 3.1.2 of the `stable` branch and versions 3.1.0,beta6 through 3.2.0.beta2 of the `beta` and `tests-passed` branches, Redis memory can be depleted by crafting a site with an abnormally long favicon URL and drafting multiple posts which Onebox it. The issue is patched in version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.
EPSS: 0.010 (58.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Discourse — versions >= 3.1.0.beta6, < 3.2.0.beta3, 3.1.0, 3.2.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-47120?
- CVE-2023-47120 is a high-severity vulnerability in Discourse, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2023-11-10.
- How severe is CVE-2023-47120?
- High severity. CVSS v3 base score is 7.5 out of 10.