XySSL up to 0.8 ssl_parse_client_key_exchange access control

HistoryDiffrelatejsonxmlCTI

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.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in XySSL up to 0.8 and classified as critical. Affected by this vulnerability is the function ssl_parse_client_key_exchange. Performing a manipulation results in access control. This vulnerability is identified as CVE-2008-7128. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in XySSL up to 0.8. It has been classified as critical. This affects the function ssl_parse_client_key_exchange. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The ssl_parse_client_key_exchange function in XySSL before 0.9 does not protect against certain Bleichenbacher attacks using chosen ciphertext, which allows remote attackers to recover keys via unspecified vectors.

The weakness was released 08/31/2009 (Website). It is possible to read the advisory at vupen.com. This vulnerability is uniquely identified as CVE-2008-7128 since 08/31/2009. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

It is declared as proof-of-concept.

Upgrading to version 0.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (41253). Entry connected to this vulnerability is available at VDB-49732. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

XySSL

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: XySSL 0.1

Timelineinfo

08/31/2009 🔍
08/31/2009 +0 days 🔍
08/31/2009 +0 days 🔍
03/18/2015 +2025 days 🔍
01/18/2019 +1402 days 🔍

Sourcesinfo

Advisory: vupen.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2008-7128 (🔍)
GCVE (CVE): GCVE-0-2008-7128
GCVE (VulDB): GCVE-100-49731
X-Force: 41253
Vupen: ADV-2008-0917

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 01/18/2019 08:23
Changes: 03/18/2015 15:15 (47), 01/18/2019 08:23 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.