Apache htdigest realm Variable Overflow

Medium Nessus Network Monitor Plugin ID 2884


The remote host is vulnerable to a buffer overflow.


The remote host appears to be running a version of Apache, an open source web server. This version of Apache is vulnerable to a flaw in the 'htdigest' utilility. Specifically, a long user-supplied realm will cause an overflow and execution of arbitrary code. This issue is not considered a local flaw, as the program is not run setuid. An attacker exploiting this flaw would need to find a vulnerable Apache Web server that was making a call to 'htdigest' via a CGI script.


Upgrade or patch according to vendor recommendations.

See Also


Plugin Details

Severity: Medium

ID: 2884

File Name: 2884.prm

Family: Web Servers

Published: 2005/05/06

Modified: 2016/01/21

Dependencies: 3057

Risk Information

Risk Factor: Medium


Base Score: 5.1

Temporal Score: 4.2

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND


Base Score: 5.6

Temporal Score: 5.2


Temporal Vector: CVSS3#E:F/RL:O/RC:X

Vulnerability Information

CPE: cpe:/a:apache:http_server

Reference Information

CVE: CVE-2005-1344

BID: 13537