CVE-2021-36777 login-proxy sends password to attacker-provided domain

What is CVE-2021-36777?

CVE-2021-36777 is a high-severity vulnerability in openSUSE Build service, published on 9 Mar 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A Reliance on Untrusted Inputs in a Security Decision vulnerability in the login proxy of the openSUSE Build service allowed attackers to present users with a expected login form that then sends the clear text credentials to an attacker specified server. This issue affects: openSUSE Build service login-proxy-scripts versions prior to dc000cdfe9b9b715fb92195b1a57559362f689ef.

Weakness: CWE-807

Which versions are affected by CVE-2021-36777?

It affects 1 product.

Products include Opensuse Open Build Service.

How do I fix CVE-2021-36777?

No fix has been published for CVE-2021-36777 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-36777 being exploited?

There is no known exploitation of CVE-2021-36777 in the wild and no public exploit code.

Other vulnerabilities in openSUSE Build service

• CVE-2022-21949 Multiple XXE vulnerabilities in OBS High 8.8
• CVE-2013-3703 No write permission check in change_role command High 8.8
• CVE-2014-0594 CSRF protection incorrectly disabled High 8.8
• CVE-2011-3178 openbuildservice webui code injection High 8.1
• CVE-2014-0593 sed command injection High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-3pc4-pj89-2j67.