Vulnerability identifier: #VU32800

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
lighttpd
Server applications / Web servers

Vendor: lighttpd

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

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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

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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