CVE-2021-41615 Weak cryptography in n/a

Critical 9.8 Published 8 Aug 2022 Updated 4 Aug 2024

Hardcoded nonce entropy in GoAhead WebServer allows attackers to bypass HTTP Digest Authentication security mechanisms.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-41615?

CVE-2021-41615 is a critical vulnerability in n/a, published on 8 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

websda.c in GoAhead WebServer 2.1.8 has insufficient nonce entropy because the nonce calculation relies on the hardcoded onceuponatimeinparadise value, which does not follow the secret-data guideline for HTTP Digest Access Authentication in RFC 7616 section 3.3 (or RFC 2617 section 3.2.1). NOTE: 2.1.8 is a version from 2003; however, the affected websda.c code appears in multiple derivative works that may be used in 2021. Recent GoAhead software is unaffected.

Weakness: CWE-331

Which versions are affected by CVE-2021-41615?

It affects 1 product.

Products include Embedthis Goahead.

How do I fix CVE-2021-41615?

No fix has been published for CVE-2021-41615 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-41615 being exploited?

There is no known exploitation of CVE-2021-41615 in the wild and no public exploit code.

Sources

Also known as GHSA-m7x8-4574-hxw6.