OpenBSD OpenSSH 3.7.1 buffer.c/channels.c memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenBSD OpenSSH 3.7.1. It has been classified as critical. The affected element is an unknown function of the file buffer.c/channels.c. This manipulation causes memory corruption. This vulnerability is handled as CVE-2003-0695. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenBSD OpenSSH 3.7.1 (Connectivity Software). It has been declared as critical. Affected by this vulnerability is an unknown code block of the file buffer.c/channels.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Multiple "buffer management errors" in OpenSSH before 3.7.1 may allow attackers to cause a denial of service or execute arbitrary code using (1) buffer_init in buffer.c, (2) buffer_free in buffer.c, or (3) a separate function in channels.c, a different vulnerability than CVE-2003-0693.

The weakness was released 10/06/2003 (Website). It is possible to read the advisory at redhat.com. This vulnerability is known as CVE-2003-0695 since 08/14/2003. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 15219 (Debian DSA-382-3 : ssh - possible remote vulnerability), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38217 (OpenSSH Multiple Memory Management Vulnerabilities).

Upgrading to version 3.7.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (13215), Tenable (15219) and Vulnerability Center (SBV-2173†). Entries connected to this vulnerability are available at VDB-287 and VDB-20847. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 15219
Nessus Name: Debian DSA-382-3 : ssh - possible remote vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53698
OpenVAS Name: Debian Security Advisory DSA 382-2 (ssh)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenSSH 3.7.1

Timelineinfo

08/14/2003 🔍
09/17/2003 +34 days 🔍
09/24/2003 +7 days 🔍
10/06/2003 +12 days 🔍
10/06/2003 +0 days 🔍
09/29/2004 +359 days 🔍
08/14/2014 +3606 days 🔍
08/11/2025 +4015 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: redhat.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2003-0695 (🔍)
GCVE (CVE): GCVE-0-2003-0695
GCVE (VulDB): GCVE-100-20851

OVAL: 🔍

X-Force: 13215
Vulnerability Center: 2173 - OpenSSH < 3.7.1 Buffer Management Errors in Several buffer.c and channels.c Functions, Critical

See also: 🔍

Entryinfo

Created: 08/15/2014 01:05
Updated: 08/11/2025 04:02
Changes: 08/15/2014 01:05 (68), 05/13/2019 10:30 (2), 08/11/2025 04:02 (20)
Complete: 🔍
Cache ID: 216:D3E:103

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