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ZDI-11-087: Novell iPrint LPD Remote Code Execution Vulnerability

ZDI-11-087: Novell iPrint LPD Remote Code Execution Vulnerability


February 16, 2011

-- CVE ID:

-- CVSS:
9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)

-- Affected Vendors:

-- Affected Products:
Novell iPrint

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 8562. 
For further product information on the TippingPoint IPS, visit:


-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Novell iPrint Server. Authentication is not
required to exploit this vulnerability.

The flaw exists within the '/opt/novell/iprint/bin/ipsmd' component this
component communicates with 'ilprsrvd' which listens on TCP port 515.
When handling multiple LPR opcodes the process blindly copies user
supplied data into a fixed-length buffer on the stack. A remote attacker
can exploit this vulnerability to execute arbitrary code under the
context of the iprint user.

-- Vendor Response:
Novell states:
The problem is documented in Novell TID 7007858.

-- Disclosure Timeline:
2010-12-01 - Vulnerability reported to vendor
2011-02-16 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Francis Provencher for Protek Research Lab's

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