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CERT Coordination Center

ISC InterNetNews (INN) innfeed contains buffer overflow

Vulnerability Note VU#943536

Original Release Date: 2001-09-05 | Last Revised: 2001-09-05


A locally exploitable buffer overflow exists in ISC InterNetNews.


InterNetNews is a Usenet/Netnews news server supported by the Internet Software Consortium and volunteers. Innfeed is a component of InterNetNews that implements the NNTP protocol for transerring news between hosts. A locally exploitable buffer overflow exists in Innfeed that could allow a local intruder to overflow a buffer by passing it extremely long command-line arguments. This vulnerability affects versions of INN prior to INN 2.3.0.


An intruder can execute arbitrary code on the target system as the user running InterNetNews, typically news.


Upgrade INN to 2.3.0, which includes a rewritten startinnfeed utility.

Vendor Information


ISC Affected

Notified:  April 18, 2001 Updated: September 04, 2001



Vendor Statement

ISC recommends that users upgrade INN to 2.3.0, which features a rewritten startinnfeed utility.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

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This vulnerability was discovered by Enrique A. Sanchez Montellano and Alex Hernandez .

This document was written by Ian A. Finlay and is based on information obtained from a Defcom Labs Advisory.

Other Information

CVE IDs: None
Severity Metric: 7.03
Date Public: 2001-04-18
Date First Published: 2001-09-05
Date Last Updated: 2001-09-05 14:45 UTC
Document Revision: 41

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