Discourse DoS through Onebox favicon URL
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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-47120US | high7.5 | — | ||
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… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/discourse/discourse/commit/95a82d608d6377faf68a0e2c5d9640b043557852FIX
- https://github.com/discourse/discourse/commit/e910dd09140cb4abc3a563b95af4a137ca7fa0ceFIX
- https://github.com/discourse/discourse/security/advisories/GHSA-77cw-xhj8-hfp3ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2023-47120WEB
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