OpenSSL 0.9.8i cryptographic issues

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in OpenSSL 0.9.8i (Network Encryption Software). This issue affects an unknown code block. The manipulation with an unknown input leads to a weak encryption vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality. The summary by CVE is:

OpenSSL 0.9.8i on the Gaisler Research LEON3 SoC on the Xilinx Virtex-II Pro FPGA uses a Fixed Width Exponentiation (FWE) algorithm for certain signature calculations, and does not verify the signature before providing it to a caller, which makes it easier for physically proximate attackers to determine the private key via a modified supply voltage for the microprocessor, related to a "fault-based attack."

The issue has been introduced in 09/15/2008. The weakness was published 03/05/2010 (Website). The advisory is shared at osvdb.org. The identification of this vulnerability is CVE-2010-0928 since 03/05/2010. The exploitation is known to be difficult. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 536 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 0.9.8i eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (56750).

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.1
VulDB Temp Score: 4.9
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: Weak encryption
CWE: CWE-310
ATT&CK: T1600

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenSSL 0.9.8i

Timelineinfo

09/15/2008 🔍
03/05/2010 +536 days 🔍
03/05/2010 +0 days 🔍
03/05/2010 +0 days 🔍
03/05/2010 +0 days 🔍
03/19/2015 +1839 days 🔍
04/15/2019 +1488 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: osvdb.org [404 Not Found]
Status: Not defined

CVE: CVE-2010-0928 (🔍)
X-Force: 56750
OSVDB: 62808 - OpenSSL RSA Authentication Fault-Based Attack Key Disclosure Weakness

Entryinfo

Created: 03/19/2015 12:22 PM
Updated: 04/15/2019 07:41 AM
Changes: (2) advisory_url source_cve_assigned
Complete: 🔍

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