Vulnerability · Published Apr 11, 2022 · Assigned by GitHub_M

CVE-2022-24837Enumerable upload file names in hedgedoc

Medium 5.3

In plain English

A medium-severity information exposure in hedgedoc from hedgedoc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)1.1%top 33.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

HedgeDoc is an open-source, web-based, self-hosted, collaborative markdown editor. Images uploaded with HedgeDoc version 1.9.1 and later have an enumerable filename after the upload, resulting in potential information leakage of uploaded documents. This is especially relevant for private notes and affects all upload backends, except Lutim and imgur. This issue is patched in version 1.9.3 by replacing the filename generation with UUIDv4. If you cannot upgrade to HedgeDoc 1.9.3, it is possible to block POST requests to `/uploadimage`, which will disable future uploads.

Affected products (as reported)

Vendor	Product	Versions
hedgedoc	hedgedoc	>=1.9.1, < 1.9.3

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-q6vv-2q26-j7rx x_refsource_CONFIRM
https://github.com/node-formidable/formidable/issues/808 x_refsource_MISC
https://github.com/hedgedoc/hedgedoc/commit/9e2f9e21e904c4a319e84265da7ef03b0a8e343a x_refsource_MISC