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Last updated: 5/27/2016 7:57:57 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2003-0693

Original release date: 09/22/2003
Last revised: 03/07/2011


A "buffer management error" in buffer_append_space of buffer.c for OpenSSH before 3.7 may allow remote attackers to execute arbitrary code by causing an incorrect amount of memory to be freed and corrupting the heap, a different vulnerability than CVE-2003-0695.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 10.0 HIGH
Impact Subscore: 10.0
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (06/01/2007)
Not vulnerable. This flaw is fixed in Red Hat Enterprise Linux 2.1 via the errata RHSA-2003:280. This flaw is fixed in Red Hat Enterprise Linux 3 as a backported patch. The source RPM contains the patch openssh-3.6.1p2-owl-realloc.diff which resolved this flaw before Red Hat Enterprise Linux 3 GA. This flaw does not affect any subsequent versions of Red Hat Enterprise Linux.

References to Advisories, Solutions, and Tools

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External Source: CONFIRM
Name: http://www.openssh.com/txt/buffer.adv
External Source: XF
Name: openssh-packet-bo(13191)
Type: Advisory
External Source: TRUSTIX
Name: 2003-0033
External Source: FULLDISC
Name: 20030916 The lowdown on SSH vulnerability
US-CERT Vulnerability Note: OVAL
Name: oval:org.mitre.oval:def:447
Type: Tool Signature
External Source: REDHAT
Name: RHSA-2003:280
External Source: FULLDISC
Name: 20030915 new ssh exploit?
External Source: DEBIAN
Name: DSA-383
External Source: SUNALERT
Name: 1000620
External Source: REDHAT
Name: RHSA-2003:279
External Source: FULLDISC
Name: 20030915 openssh remote exploit
US-CERT Vulnerability Note: CERT
Name: CA-2003-24
External Source: DEBIAN
Name: DSA-382
External Source: MANDRAKE
Name: MDKSA-2003:090
US-CERT Vulnerability Note: CERT-VN
Name: VU#333628
Type: Advisory; Patch Information
External Source: BUGTRAQ
Name: 20030917 [OpenPKG-SA-2003.040] OpenPKG Security Advisory (openssh)
External Source: BUGTRAQ
Name: 20030916 OpenSSH Buffer Management Bug Advisory
Type: Advisory; Patch Information
US-CERT Vulnerability Note: OVAL
Name: oval:org.mitre.oval:def:2719
Type: Tool Signature
External Source: BUGTRAQ
Name: 20030916 [slackware-security] OpenSSH Security Advisory (SSA:2003-259-01)

References to Check Content

Identifier: oval:org.mitre.oval:def:2719
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5
Identifier: oval:org.mitre.oval:def:447
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Vulnerable software and versions

+ Configuration 1
+ OR
cpe:/a:openbsd:openssh:3.7 and previous versions

* Denotes Vulnerable Software
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Technical Details

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