Apache htdigest realm Variable Overflow

Medium Log Correlation Engine Plugin ID 800593


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: 800593

File Name: 800593.prm

Family: Web Servers

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

Reference Information

CVE: CVE-2005-1344

BID: 13537