oss-security - CVE Request: bozohttpd: basic http authentication bypass

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Date: Fri, 18 Jul 2014 21:51:22 +0200
From: Salvatore Bonaccorso <carnil@...ian.org>
To: OSS Security Mailinglist <oss-security@...ts.openwall.com>
Cc: CVE Assignments MITRE <cve-assign@...re.org>
Subject: CVE Request: bozohttpd: basic http authentication bypass

Hi

Can a CVE be assigned for the following bozohttpd basic http
authetication bypass vulnerability? It was fixed in bozohttpd version
20140708. Quoting NetBSD advisory:

> Abstract
> ========
> 
> When checking for restricted access via .htpasswd files, bozohttpd
> fails to properly check for truncation, allowing specially crafted
> requests to bypass access control without a password.  Files of
> length 10 or more are not affected.
> 
> 
> Technical Details
> =================
> 
> A call to snprintf() was not properly checking for truncation of
> a provided user path, allowing a later concatenation of the
> ".htpasswd" file name to exceed the maximum pathname length.  This
> stops the check for .htpasswd file from working correctly, bypassing
> the basic HTTP authentication scheme.  Files with names longer than
> ".htpasswd" are not visible as they require at least enough for a
> valid path to be available.

 [1] http://mail-index.netbsd.org/current-users/2014/07/17/msg025287.html
 [2] https://bugs.debian.org/755197

Thanks in advance,

Regards,
Salvatore

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