Arch Linux Security Advisory ASA-202109-1

Severity: High
Date : 2021-09-14
CVE-ID : CVE-2021-39175
Package : hedgedoc
Type : cross-site scripting
Remote : Yes
Link : https://security.archlinux.org/AVG-2331

Summary

The package hedgedoc before version 1.9.0-1 is vulnerable to cross-site
scripting.

Resolution

Upgrade to 1.9.0-1.

pacman -Syu “hedgedoc>=1.9.0-1”

The problem has been fixed upstream in version 1.9.0.

Workaround

None.

Description

In HedgeDoc versions prior to 1.9.0, an unauthenticated attacker can
inject arbitrary JavaScript into the speaker-notes of the slide-mode
feature by embedding an iframe hosting the malicious code into the
slides or by embedding the HedgeDoc instance into another page.

Impact

An unauthenticated remote attacker could execute arbitrary JavaScript
code in the slide mode of HedgeDoc.

References

https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-j748-779h-9697
https://github.com/hedgedoc/hedgedoc/pull/1369
https://github.com/hedgedoc/hedgedoc/pull/1375
https://github.com/hedgedoc/hedgedoc/pull/1513
https://security.archlinux.org/CVE-2021-39175