#VU45132 Cross-site scripting in feedparser - CVE-2011-1158

Vulnerability identifier: #VU45132

Vulnerability risk: Low

CVSSv4.0: 2.7 [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:U/U:Clear]

CVE-ID: CVE-2011-1158

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

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) 5.x before 5.0.1. 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: 5.0

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External links
https://lists.opensuse.org/opensuse-updates/2011-04/msg00026.html
https://openwall.com/lists/oss-security/2011/03/14/18
https://openwall.com/lists/oss-security/2011/03/15/11
https://secunia.com/advisories/43730
https://secunia.com/advisories/44074
https://support.novell.com/security/cve/CVE-2011-1158.html
https://www.mandriva.com/security/advisories?name=MDVSA-2011:082
https://www.securityfocus.com/bid/46867
https://bugzilla.novell.com/show_bug.cgi?id=680074
https://bugzilla.redhat.com/show_bug.cgi?id=684877
https://code.google.com/p/feedparser/issues/detail?id=255

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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.