This security advisory describes one medium risk vulnerability.
1) Information disclosure
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]
CVE-ID: CVE-2021-29475
CWE-ID: CWE-200 - Information Exposure
Exploit availability: No
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote authenticated attacker can read arbitrary files from the file system when exporting a note to PDF.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
HedgeDoc: 0.3.3, 0.3.4, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4, 0.4.5, 0.4.6, 0.5.0, 0.5.1, 1.2.0, 1.2.1, 1.3.0, 1.3.1, 1.3.2, 1.4.0
CPE
External links
https://github.com/hedgedoc/hedgedoc/commit/c1789474020a6d668d616464cb2da5e90e123f65https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-pxxg-px9v-6qf3
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
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