OpenSSL 1.0.2 Diffie-Hellman Parameter X942-style Parameter information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.5$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenSSL 1.0.2. It has been rated as critical. Affected is an unknown function of the component Diffie-Hellman Parameter Handler. The manipulation as part of X942-style Parameter leads to information disclosure. This vulnerability is uniquely identified as CVE-2016-0701. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in OpenSSL 1.0.2 (Network Encryption Software) and classified as critical. This issue affects an unknown function of the component Diffie-Hellman Parameter Handler. The manipulation as part of a X942-style Parameter leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality, and integrity.

The weakness was disclosed 01/28/2016 by Antonio Sanso with Adobe as 20160128.txt as confirmed advisory (Website). The advisory is shared at openssl.org. The identification of this vulnerability is CVE-2016-0701 since 12/16/2015. The exploitation is known to be easy. The attack may be initiated remotely. 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 T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 88465 (FreeBSD : openssl -- multiple vulnerabilities (3679fd10-c5d1-11e5-b85f-0018fe623f2b)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43476 (Cisco NX-OS OpenSSL Multiple Vulnerabilities (cisco-sa-20160129-openssl)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110234), Tenable (88465), SecurityFocus (BID 82233†) and Vulnerability Center (SBV-56396†). bugzilla.redhat.com is providing further details. The entries VDB-80718, VDB-82627, VDB-82610 and VDB-82602 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.5

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.7
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 88465
Nessus Name: FreeBSD : openssl -- multiple vulnerabilities (3679fd10-c5d1-11e5-b85f-0018fe623f2b)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for openssl FEDORA-2016-527018
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: 878e2c5b13010329c203f309ed0c8f2113f85648
Fortigate IPS: 🔍

Timelineinfo

12/16/2015 🔍
01/27/2016 +42 days 🔍
01/28/2016 +0 days 🔍
01/28/2016 +0 days 🔍
01/28/2016 +0 days 🔍
01/28/2016 +0 days 🔍
01/29/2016 +0 days 🔍
02/03/2016 +5 days 🔍
02/14/2016 +10 days 🔍
07/06/2022 +2334 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: 20160128.txt
Researcher: Antonio Sanso
Organization: Adobe
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-0701 (🔍)
GCVE (CVE): GCVE-0-2016-0701
GCVE (VulDB): GCVE-100-80717

OVAL: 🔍

CERT: 🔍
X-Force: 110234 - OpenSSL DH man-in-the-middle
SecurityFocus: 82233 - OpenSSL CVE-2016-0701 Security Bypass Vulnerability
SecurityTracker: 1034849
Vulnerability Center: 56396 - OpenSSL prior to 1.0.2f Remote Information Disclosure due to Unsafe Primes Generation, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 01/29/2016 10:44
Updated: 07/06/2022 14:33
Changes: 01/29/2016 10:44 (70), 07/23/2018 07:50 (25), 07/06/2022 14:33 (7)
Complete: 🔍
Cache ID: 216::103

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