OpenSSL up to 0.9.7a RSA Key Handling

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in OpenSSL up to 0.9.7a. Impacted is an unknown function of the component RSA Key Handling. Executing a manipulation can lead to an unknown weakness. This vulnerability is handled as CVE-2003-0147. The attack can be executed remotely. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in OpenSSL up to 0.9.7a (Network Encryption Software). It has been declared as critical. This vulnerability affects some unknown functionality of the component RSA Key Handling. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server s private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).

The issue has been introduced in 09/24/2000. The weakness was released 03/14/2003 by David Brumley and Dan Boneh (Website). The advisory is shared for download at crypto.stanford.edu. This vulnerability was named CVE-2003-0147. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 901 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 11267 (OpenSSL < 0.9.6j / 0.9.7b Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38356 (OpenSSL RSA Timing Attack Vulnerability).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at securityfocus.com. Attack attempts may be identified with Snort ID 1887.

The vulnerability is also documented in the databases at X-Force (11547), Tenable (11267), SecurityFocus (BID 7101†) and Vulnerability Center (SBV-3644†). Additional details are provided at securityfocus.com. Entry connected to this vulnerability is available at VDB-20218. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

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: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Unknown
CWE: Unknown
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: 11267
Nessus Name: OpenSSL < 0.9.6j / 0.9.7b Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 53361
OpenVAS Name: Debian Security Advisory DSA 288-1 (openssl)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: securityfocus.com

Snort ID: 1887

Timelineinfo

09/24/2000 🔍
03/13/2003 +900 days 🔍
03/14/2003 +1 days 🔍
03/14/2003 +0 days 🔍
03/31/2003 +17 days 🔍
02/02/2004 +308 days 🔍
01/19/2025 +7657 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: crypto.stanford.edu
Researcher: David Brumley, Dan Boneh
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2003-0147 (🔍)
GCVE (CVE): GCVE-0-2003-0147
GCVE (VulDB): GCVE-100-16

OVAL: 🔍

CERT: 🔍
X-Force: 11547
SecurityFocus: 7101
Vulnerability Center: 3644 - OpenSSL Allows Information Disclosure, Low

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 03/14/2003 01:00
Updated: 01/19/2025 03:05
Changes: 03/14/2003 01:00 (55), 05/04/2019 14:20 (27), 01/19/2025 03:05 (19)
Complete: 🔍
Cache ID: 216:B09:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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