Cross-site scripting in Nagios

1) Cross-site scripting

EUVDB-ID: #VU32800

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2011-1523

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in statusmap.c in statusmap.cgi in Nagios 3.2.3 and earlier when processing layer parameter. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

lighttpd: 1.4.40

External links

http://openwall.com/lists/oss-security/2011/03/25/3
http://openwall.com/lists/oss-security/2011/03/28/4
http://secunia.com/advisories/43287
http://secunia.com/advisories/44974
http://securityreason.com/securityalert/8241
http://tracker.nagios.org/view.php?id=207
http://www.rul3z.de/advisories/SSCHADV2011-002.txt
http://www.ubuntu.com/usn/USN-1151-1
http://bugzilla.redhat.com/show_bug.cgi?id=690877

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.