OpenSSL 0.9.6/0.9.7 ASN.1 Tag Value integer coercion

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

Summaryinfo

A vulnerability described as problematic has been identified in OpenSSL 0.9.6/0.9.7. Affected by this issue is some unknown functionality of the component ASN.1 Tag Value Handler. Executing a manipulation can lead to integer coercion. This vulnerability is handled as CVE-2003-0543. Additionally, an exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability has been found in OpenSSL 0.9.6/0.9.7 (Network Encryption Software) and classified as problematic. This vulnerability affects an unknown code block of the component ASN.1 Tag Value Handler. The manipulation with an unknown input leads to a integer coercion vulnerability. The CWE definition for the vulnerability is CWE-192. Integer coercion refers to a set of flaws pertaining to the type casting, extension, or truncation of primitive data types. As an impact it is known to affect availability. CVE summarizes:

Integer overflow in OpenSSL 0.9.6 and 0.9.7 allows remote attackers to cause a denial of service (crash) via an SSL client certificate with certain ASN.1 tag values.

The issue has been introduced in 09/24/2000. The weakness was released 09/30/2003 by Dr Stephen Henson with NISCC as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability was named CVE-2003-0543 since 07/14/2003. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1101 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 17512 (HP-UX PHSS_30056 : s700_800 11.04 Virtualvault 4.7 OWS update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family HP-UX 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).

Applying a patch is able to eliminate this problem. A possible mitigation has been published 3 months 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 (13315), Exploit-DB (146), Tenable (17512), SecurityFocus (BID 8732†) and OSVDB (3949†). Entries connected to this vulnerability are available at VDB-300, VDB-304, VDB-20957 and VDB-27831. Once again VulDB remains the best source for vulnerability data.

Productinfo

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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

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Integer coercion
CWE: CWE-192 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 17512
Nessus Name: HP-UX PHSS_30056 : s700_800 11.04 Virtualvault 4.7 OWS update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

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

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
TippingPoint: 🔍
Fortigate IPS: 🔍

Timelineinfo

09/24/2000 🔍
07/14/2003 +1023 days 🔍
09/30/2003 +78 days 🔍
09/30/2003 +0 days 🔍
09/30/2003 +0 days 🔍
10/23/2003 +23 days 🔍
10/26/2003 +3 days 🔍
11/17/2003 +22 days 🔍
12/05/2003 +18 days 🔍
02/14/2004 +71 days 🔍
03/18/2005 +397 days 🔍
08/15/2014 +3437 days 🔍
12/26/2024 +3786 days 🔍

Sourcesinfo

Product: openssl.org

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

CVE: CVE-2003-0543 (🔍)
GCVE (CVE): GCVE-0-2003-0543
GCVE (VulDB): GCVE-100-20956

OVAL: 🔍

CERT: 🔍
X-Force: 13315
SecurityFocus: 8732 - OpenSSL ASN.1 Parsing Vulnerabilities
Secunia: 10057 - Novell NetMail OpenSSL Vulnerabilities, Moderately Critical
OSVDB: 3949 - OpenSSL ASN.1 Integer Overflow DoS
Vulnerability Center: 2683 - [cisco-sa-20030930-ssl] Integer Overflow in OpenSSL 0.9.6 and 0.9.7 ASN.1 Tag Values, 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 (95), 05/16/2019 11:12 (2), 12/16/2024 12:52 (16), 12/26/2024 13:53 (1)
Complete: 🔍
Cache ID: 216:BB1:103

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