GnuTLS 3.3.16/3.4 ServerKeyExchange improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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3.2$0-$5k0.00

A vulnerability was found in GnuTLS 3.3.16/3.4 (Network Encryption Software). It has been rated as problematic. This issue affects an unknown code block of the component ServerKeyExchange Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is integrity.

The weakness was disclosed 08/11/2015 as GNUTLS-SA-2015-2 as confirmed advisory (Website). It is possible to read the advisory at gnutls.org. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability is also documented in the vulnerability database at X-Force (105703).

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/11/2015 🔍
08/19/2015 +8 days 🔍
10/18/2017 +791 days 🔍

Sourcesinfo

Advisory: GNUTLS-SA-2015-2
Status: Confirmed
X-Force: 105703 - GnuTLS ServerKeyExchange security bypass

Entryinfo

Created: 08/19/2015 11:48
Updated: 10/18/2017 11:54
Changes: 08/19/2015 11:48 (38), 10/18/2017 11:54 (4)
Complete: 🔍

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