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A new version (0.9.0.0 - Release Candidate 1) of the free Secunia PSI
has been released. The new version includes many new and advanced
features, which makes it even easier to stay patched.

Download and test it today:
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TITLE:
Larson Network Print Server Format String and Buffer Overflow
Vulnerabilities

SECUNIA ADVISORY ID:
SA28890

VERIFY ADVISORY:
http://secunia.com/advisories/28890/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From local network

SOFTWARE:
Larson Network Print Server 9.x
http://secunia.com/product/17531/

DESCRIPTION:
Luigi Auriemma has discovered two vulnerabilities in Larson Network
Print Server, which can be exploited by malicious people to cause a
DoS (Denial of Service) or compromise a vulnerable system.

1) A boundary error in the LST Network Print Server service
(NPSpcSVR.exe) when handling the "LICENSE" command can be exploited
to cause a stack-based buffer overflow via a "LICENSE" command with
an overly long license string sent to default port 3114/TCP.

Successful exploitation allows execution of arbitrary code.

2) A format string error in the in the LST Network Print Server
service when handling e.g. the "USEP" command can be exploited via
command arguments containing format string specifiers.

Successful exploitation may allow execution of arbitrary code.

The vulnerabilities are confirmed in version 9.4.2 build 105. Other
versions may also be affected.

SOLUTION:
Restrict network access to the service.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/lstnpsx-adv.txt

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About:
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