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Nexpose Security Console Session Capture

Nexpose Security Console Session Capture
Posted Jan 5, 2013
Authored by Robert Gilbert

Nexpose Security Console versions prior to 5.5.3 suffer from a session capture issue due to logging session IDs in log files.

tags | exploit
advisories | CVE-2012-6494
MD5 | 6cbbe6320ea809d9158f593194fea3e7

Nexpose Security Console Session Capture

Change Mirror Download
Product: Nexpose Security Console
Vendor: Rapid7
Version: < 5.5.3
Tested Version: 5.5.1
Vendor Notified Date: December 19, 2012
Release Date: January 2, 2013
Risk: Medium
Authentication: Access to logs required.
Remote: Yes

Description:
Due to a flaw in the way the Nexpose Security Console logs session data,
it is possible to capture the session of a logged in user.
This could be especially interesting when using a central logging system
and system admin have access to logs but not the security console.
In capturing a user’s session as shown in the proof-of-concept below, an
attacker can gain access to the already logged in account. Once the
attacker has this information, they can then hijack the established
session and impersonate the owner in a variety of contexts.

Exploit steps for proof-of-concept:
1. Nexpose admin logs in.
2. While monitoring auth.log, the “Registered session” value is captured.
3. A request to the security console is made and intercepted using a proxy.
4. ‘JSESSIONID=<session>’ is replaced by
‘nexposeCCSessionID=<SESSION-CAPTURED-IN-STEP-2>;time-zone-offset=000.
5. Success.

Vendor Notified: Yes
Vendor Response: Quickly escalated and resolved.
Vendor Update: Remediated in 5.5.4.

Reference:
CVE-2012-6494
https://community.rapid7.com/docs/DOC-2065#release5
https://www.owasp.org/index.php/Session_hijacking_attack

Credit:
Robert Gilbert
HALOCK Security Labs

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