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Insecure Library Loading
Moderately critical

ISC DHCP "script_write_params()" Buffer Overflow Vulnerability

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Release Date:  2009-07-14    Views:  6,365

Secunia Advisory SA35785

Where:

From local network

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A vulnerability has been reported in ISC DHCP, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a user's system.

The vulnerability is caused due to a boundary error within the "script_write_params()" function in client/dhclient.c and can be exploited to cause a stack-based buffer overflow by sending an overly long subnet-mask option.

Successful exploitation may allow execution of arbitrary code with "root" privileges, but requires that dhclient processes a specially crafted response from a malicious DHCP server.

The vulnerability is reported in DHCP 2.0 through 4.1.


Solution:
Update to 3.1.2p1, 4.0.1p1, or 4.1.0p1.

Further details available to Secunia VIM customers

Provided and/or discovered by:
The vendor credits Mandriva Linux Engineering Team.

Original Advisory:
ISC:
https://www.isc.org/node/468

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: ISC DHCP "script_write_params()" Buffer Overflow Vulnerability

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