#VU45134 Cross-site scripting in feedparser - CVE-2009-5065

Vulnerability identifier: #VU45134

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2009-5065

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
feedparser
Other software / Other software solutions

Vendor: kurtmckee (Kurt McKee)

Description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) before 5.0. 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

feedparser: 3.0 - 4.0.2

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External links
https://code.google.com/p/feedparser/issues/detail?id=195
https://lists.opensuse.org/opensuse-updates/2011-04/msg00026.html
https://secunia.com/advisories/44074
https://support.novell.com/security/cve/CVE-2009-5065.html
https://www.mandriva.com/security/advisories?name=MDVSA-2011:082
https://www.securityfocus.com/bid/47177
https://bugzilla.novell.com/show_bug.cgi?id=680074
https://bugzilla.redhat.com/show_bug.cgi?id=684877

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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. However, proof of concept for this vulnerability is available.