NetBSD up to 1.6 setuid Program ptrace heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in NetBSD up to 1.6. Affected by this issue is the function ptrace of the component setuid Program. The manipulation results in heap-based overflow. This vulnerability is known as CVE-2004-0396. Access to the local network is required for this attack. Furthermore, an exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in NetBSD up to 1.6 (Operating System). It has been classified as critical. Affected is the function ptrace of the component setuid Program. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Heap-based buffer overflow in CVS 1.11.x up to 1.11.15, and 1.12.x up to 1.12.7, when using the pserver mechanism allows remote attackers to execute arbitrary code via Entry lines.

The bug was discovered 05/19/2004. The weakness was published 11/02/2005 by Tavis Ormandy (@taviso) with Google Security Team (Website). The advisory is shared for download at ftp.netbsd.org. This vulnerability is traded as CVE-2004-0396 since 04/13/2004. Access to the local network is required for this attack. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed in ANSI C and been published even before and not after the advisory. The exploit is shared for download at packetstormsecurity.nl. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 14147 (Mandrake Linux Security Advisory : cvs (MDKSA-2004:048)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38273 (CVS Malformed Entry Modified and Unchanged Flag Insertion Heap Overflow Vulnerability).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at netbsd.org. A possible mitigation has been published even before and not after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 13614. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 2814.

The vulnerability is also documented in the databases at X-Force (16193), Exploit-DB (300), Tenable (14147), SecurityFocus (BID 10384†) and OSVDB (6305†). Similar entries are available at VDB-666, VDB-1858, VDB-1857 and VDB-1859. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 14147
Nessus Name: Mandrake Linux Security Advisory : cvs (MDKSA-2004:048)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 100289
OpenVAS Name: CVS Malformed Entry Modified and Unchanged Flag Insertion Heap Overflow Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: netbsd.org

Snort ID: 13614
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

04/13/2004 🔍
05/19/2004 +36 days 🔍
05/19/2004 +0 days 🔍
05/19/2004 +0 days 🔍
05/19/2004 +0 days 🔍
05/19/2004 +0 days 🔍
05/20/2004 +1 days 🔍
05/21/2004 +1 days 🔍
06/14/2004 +23 days 🔍
07/31/2004 +47 days 🔍
11/02/2005 +459 days 🔍
11/07/2005 +5 days 🔍
07/12/2025 +7187 days 🔍

Sourcesinfo

Advisory: ftp.netbsd.org
Researcher: Tavis Ormandy (@taviso)
Organization: Google Security Team
Status: Confirmed

CVE: CVE-2004-0396 (🔍)
GCVE (CVE): GCVE-0-2004-0396
GCVE (VulDB): GCVE-100-1860

OVAL: 🔍

CERT: 🔍
X-Force: 16193
SecurityFocus: 10384 - CVS Malformed Entry Modified and Unchanged Flag Insertion Heap Overflow Vulnerability
Secunia: 17389 - NetBSD Update Fixes Multiple Vulnerabilities, Highly Critical
OSVDB: 6305 - CVS pserver Line Entry Handling Remote Overflow
Vulnerability Center: 4332 - Buffer Overflow in CVS Pserver Entry Lines Enables Code Execution, High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/07/2005 10:26
Updated: 07/12/2025 23:07
Changes: 11/07/2005 10:26 (103), 07/05/2019 09:32 (3), 06/08/2024 21:15 (16), 12/16/2024 03:03 (3), 07/12/2025 23:07 (2)
Complete: 🔍
Cache ID: 216:016:103

Once again VulDB remains the best source for vulnerability data.

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