OpenSSL 0.9.6/0.9.7 ASN.1 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in OpenSSL 0.9.6/0.9.7. This affects an unknown part of the component ASN.1. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2003-0544. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenSSL 0.9.6/0.9.7 (Network Encryption Software) and classified as problematic. This issue affects some unknown processing of the component ASN.1. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

OpenSSL 0.9.6 and 0.9.7 does not properly track the number of characters in certain ASN.1 inputs, which allows remote attackers to cause a denial of service (crash) via an SSL client certificate that causes OpenSSL to read past the end of a buffer when the long form is used.

The issue has been introduced in 09/24/2000. The weakness was disclosed 11/17/2003 by Stephen Henson with NISCC as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. The identification of this vulnerability is CVE-2003-0544 since 07/14/2003. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in ANSI C. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1102 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 15230 (Debian DSA-393-1 : openssl - denial of service), 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 38224 (OpenSSL ASN.1 Parsing Vulnerabilities).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 3490.

The vulnerability is also documented in the databases at X-Force (13316), Tenable (15230), SecurityFocus (BID 8732†), Secunia (SA22249†) and Vulnerability Center (SBV-2684†). The entries VDB-304, VDB-20956 and VDB-27831 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Name

Version

License

Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: 15230
Nessus Name: Debian DSA-393-1 : openssl - denial of service
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53677
OpenVAS Name: Debian Security Advisory DSA 393-1 (openssl)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍

Timelineinfo

09/24/2000 🔍
07/14/2003 +1023 days 🔍
09/30/2003 +78 days 🔍
09/30/2003 +0 days 🔍
10/01/2003 +1 days 🔍
10/26/2003 +25 days 🔍
11/17/2003 +22 days 🔍
11/17/2003 +0 days 🔍
09/29/2004 +317 days 🔍
10/04/2006 +735 days 🔍
08/15/2014 +2872 days 🔍
12/26/2024 +3786 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: kb.cert.org
Researcher: Stephen Henson
Organization: NISCC
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2003-0544 (🔍)
GCVE (CVE): GCVE-0-2003-0544
GCVE (VulDB): GCVE-100-20957

OVAL: 🔍

CERT: 🔍
X-Force: 13316
SecurityFocus: 8732 - OpenSSL ASN.1 Parsing Vulnerabilities
Secunia: 22249 - IBM Rational RequisitePro OpenSSL Vulnerability, Highly Critical
Vulnerability Center: 2684 - [cisco-sa-20030930-ssl] OpenSSL 0.9.6 and 0.9.7 ASN.1 inputs DoS, High
Vupen: ADV-2006-3900

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

Entryinfo

Created: 08/15/2014 16:31
Updated: 12/26/2024 13:53
Changes: 08/15/2014 16:31 (83), 05/16/2019 11:19 (7), 12/26/2024 13:53 (17)
Complete: 🔍
Cache ID: 216:0C2:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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