CVE-2021-41611 Security feature bypass in n/a

What is CVE-2021-41611?

CVE-2021-41611 is a high-severity vulnerability in Fedoraproject Fedora, published on 18 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Squid 5.0.6 through 5.1.x before 5.2. When validating an origin server or peer certificate, Squid may incorrectly classify certain certificates as trusted. This problem allows a remote server to obtain security trust well improperly. This indication of trust may be passed along to clients, allowing access to unsafe or hijacked services.

Weakness: CWE-295

Which versions are affected by CVE-2021-41611?

It affects 2 products.

Products include Fedoraproject Fedora, Squid-Cache Squid.

How do I fix CVE-2021-41611?

Upgrade to a fixed version.

Is CVE-2021-41611 being exploited?

There is no known exploitation of CVE-2021-41611 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

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

Also known as ALPINE-CVE-2021-41611, DEBIAN-CVE-2021-41611, GHSA-47m4-g3mv-9q5r.