cve-2021-21259
Vulnerability from cvelistv5
Published
2021-01-22 17:10
Modified
2024-08-03 18:09
Severity ?
7.4 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Summary
HedgeDoc is open source software which lets you create real-time collaborative markdown notes. In HedgeDoc before version 1.7.2, an attacker can inject arbitrary JavaScript into a HedgeDoc note, which is executed when the note is viewed in slide mode. Depending on the configuration of the instance, the attacker may not need authentication to create or edit notes. The problem is patched in HedgeDoc 1.7.2. As a workaround, disallow loading JavaScript from 3rd party sites using the `Content-Security-Policy` header. Note that this will break some embedded content.
References
security-advisories@github.comhttps://github.com/hackmdio/codimd/issues/1648Exploit, Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/hedgedoc/hedgedoc/commit/35b0d39a12aa35f27fba8c1f50b1886706e7efefPatch, Third Party Advisory
security-advisories@github.comhttps://github.com/hedgedoc/hedgedoc/releases/tag/1.7.2Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-44w9-vm8p-3cxwThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/hackmdio/codimd/issues/1648Exploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/hedgedoc/hedgedoc/commit/35b0d39a12aa35f27fba8c1f50b1886706e7efefPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/hedgedoc/hedgedoc/releases/tag/1.7.2Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-44w9-vm8p-3cxwThird Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

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