Vulnerability Note VU#866432
Commvault Edge Server deserializes cookie data insecurely
Original Release date: 03 Nov 2015 | Last revised: 06 Nov 2015

Overview
Commvault Edge Server, version 10 R2, deserializes untrusted, user-provided cookie data, resulting in arbitrary OS command execution with the web server’s privileges.

Description
CWE-502: Deserialization of Untrusted Data – CVE-2015-7253
Commvault Edge Server, version 10 R2, deserializes user-provided cookie data without properly validating it first. An unauthenticated attacker with access to the CommVault Edge Server Web Console can provide specially crafted cookie data that, when deserialized, results in the execution of arbitrary OS commands with the web server’s privileges.

Impact
A remote, unauthenticated attacker can provide specially crafted cookie data that, when deserialized, will execute arbitrary OS commands with the privileges of the web server.

Solution
Apply an update

The vendor has issued updates to address this vulnerability. Users are encouraged to update to the latest release, but those unable or unwilling to do so should consider the following workaround.
Restrict access

As a general good security practice, only allow connections from trusted hosts and networks.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate UpdatedCommvaultAffected17 Sep 201503 Nov 2015If you are a vendor and your product is affected, let
us know.

CVSS Metrics (Learn More)

Group
Score
Vector

Base
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal
8.5
E:POC/RL:U/RC:UR

Environmental
2.1
CDP:ND/TD:L/CR:ND/IR:ND/AR:ND

References

http://www.commvault.com/
https://cwe.mitre.org/data/definitions/502.html
http://docs.commvault.com/commvault/v10/article?p=announcement/announcements.htm#Security

Credit

Thanks to Markus Wulftange and Matthias Kaiser of Code White for reporting this vulnerability.
This document was written by Joel Land.

Other Information

CVE IDs:
CVE-2015-7253

Date Public:
03 Nov 2015

Date First Published:
03 Nov 2015

Date Last Updated:
06 Nov 2015

Document Revision:
15

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