OpenSSL up to 0.9.8j DSA/ECDSA EVP_VerifyFinal input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in OpenSSL up to 0.9.8j. Affected is the function EVP_VerifyFinal of the component DSA/ECDSA Handler. Executing a manipulation can lead to input validation. The identification of this vulnerability is CVE-2008-5077. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenSSL up to 0.9.8j (Network Encryption Software). It has been declared as critical. This vulnerability affects the function EVP_VerifyFinal of the component DSA/ECDSA Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

OpenSSL 0.9.8i and earlier does not properly check the return value from the EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys.

The issue has been introduced in 01/07/2009. The weakness was shared 01/08/2009 with Google Security Team (Website). The advisory is shared for download at openssl.org. This vulnerability was named CVE-2008-5077 since 11/14/2008. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 17762 (OpenSSL < 0.9.8j Signature Spoofing), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86849 (HP System Management Homepage Multiple Vulnerabilities).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at openssl.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 4 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (47836), Tenable (17762), SecurityFocus (BID 35031†), OSVDB (62878†) and Secunia (SA39005†). The entries VDB-45799, VDB-45798, VDB-45797 and VDB-45796 are related to this item. 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: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 17762
Nessus Name: OpenSSL < 0.9.8j Signature Spoofing
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63148
OpenVAS Name: Debian Security Advisory DSA 1701-1 (openssl, openssl097)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: openssl.org

Timelineinfo

11/14/2008 🔍
01/07/2009 +54 days 🔍
01/07/2009 +0 days 🔍
01/07/2009 +0 days 🔍
01/08/2009 +1 days 🔍
01/12/2009 +4 days 🔍
01/12/2009 +0 days 🔍
01/19/2009 +7 days 🔍
05/19/2009 +120 days 🔍
03/09/2010 +294 days 🔍
01/04/2012 +665 days 🔍
12/30/2024 +4744 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: openssl.org
Organization: Google Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-5077 (🔍)
GCVE (CVE): GCVE-0-2008-5077
GCVE (VulDB): GCVE-100-3904

OVAL: 🔍

X-Force: 47836
SecurityFocus: 35031 - HP System Management Homepage Unspecified Cross Site Scripting Vulnerability
Secunia: 39005 - F5 FirePass OpenSSL "EVP_VerifyFinal()" Spoofing Vulnerability, Less Critical
OSVDB: 62878 - SSH Tectia Audit Player EVP_VerifyFinal Function DSA / ECDSA Key Validation Weakness
SecurityTracker: 1021523
Vulnerability Center: 20467 - OpenSSL <= 0.9.8i EVP_VerifyFinal Function Remote Certificate Validation Bypassing Vulnerability, Medium
Vupen: ADV-2009-1338

See also: 🔍

Entryinfo

Created: 01/19/2009 15:47
Updated: 12/30/2024 02:37
Changes: 01/19/2009 15:47 (86), 06/12/2018 22:28 (8), 03/17/2021 07:29 (2), 12/30/2024 02:37 (17)
Complete: 🔍
Cache ID: 216:F2B:103

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