CVE-2021-44273 Security feature bypass in n/a
Attackers can perform man-in-the-middle attacks against e2guardian's SSL MITM engine due to missing hostname validation in certificates.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-44273?
CVE-2021-44273 is a high-severity vulnerability in n/a, published on 23 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
e2guardian v5.4.x <= v5.4.3r is affected by missing SSL certificate validation in the SSL MITM engine. In standalone mode (i.e., acting as a proxy or a transparent proxy), with SSL MITM enabled, e2guardian, if built with OpenSSL v1.1.x, did not validate hostnames in certificates of the web servers that it connected to, and thus was itself vulnerable to MITM attacks.
Weakness: CWE-295
Which versions are affected by CVE-2021-44273?
It affects 1 product.
Products include E2bn E2guardian.
How do I fix CVE-2021-44273?
Upgrade to a fixed version.
Is CVE-2021-44273 being exploited?
There is no known exploitation of CVE-2021-44273 in the wild and no public exploit code.
Sources
Also known as CLEANSTART-2024-GZ94591, DEBIAN-CVE-2021-44273, DLA-3564-1, GHSA-xf97-7h34-8mrr, MGASA-2021-0594, UBUNTU-CVE-2021-44273.