Information disclosure in actions http-client



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-11021
CWE-ID CWE-200
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 http-client
Web applications / Modules and components for CMS

Vendor GitHub Actions

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU27521

Risk: Medium

CVSSv4.0: 5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-11021

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to Actions Http-Client can disclose Authorization headers to incorrect domain in certain redirect scenarios. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

http-client: 1.0.0 - 1.0.7

CPE2.3 External links

https://github.com/actions/http-client/commit/f6aae3dda4f4c9dc0b49737b36007330f78fd53a
https://github.com/actions/http-client/pull/27
https://github.com/actions/http-client/security/advisories/GHSA-9w6v-m7wp-jwg4


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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