Libgcrypt up to 1.6.4 Decryption Key information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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1.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Libgcrypt up to 1.6.4 and classified as problematic. The impacted element is an unknown function of the component Decryption Handler. Such manipulation leads to information disclosure (Key). This vulnerability is uniquely identified as CVE-2015-7511. The attack can be executed directly on the physical device. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Libgcrypt up to 1.6.4 and classified as problematic. Affected by this issue is an unknown code of the component Decryption Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Key). 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. CVE summarizes:

Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.

The weakness was disclosed 04/19/2016 (Website). The advisory is available at lists.gnupg.org. This vulnerability is handled as CVE-2015-7511 since 09/29/2015. The exploitation is known to be difficult. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 88725 (Debian DSA-3474-1 : libgcrypt20 - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168826 (OpenSuSE Security Update for libgcrypt (openSUSE-SU-2016:1227-1)).

Upgrading to version 1.6.5 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (88725) and SecurityFocus (BID 83253†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.0
VulDB Meta Temp Score: 1.9

VulDB Base Score: 2.0
VulDB Temp Score: 1.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 2.0
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 88725
Nessus Name: Debian DSA-3474-1 : libgcrypt20 - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703474
OpenVAS Name: Debian Security Advisory DSA 3474-1 (libgcrypt20 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Libgcrypt 1.6.5

Timelineinfo

09/29/2015 🔍
02/07/2016 +132 days 🔍
02/11/2016 +4 days 🔍
02/14/2016 +3 days 🔍
04/19/2016 +64 days 🔍
04/19/2016 +0 days 🔍
04/20/2016 +1 days 🔍
11/18/2024 +3134 days 🔍

Sourcesinfo

Advisory: USN-2896-1
Status: Confirmed

CVE: CVE-2015-7511 (🔍)
GCVE (CVE): GCVE-0-2015-7511
GCVE (VulDB): GCVE-100-82562
SecurityFocus: 83253 - GNU Libgcrypt CVE-2015-7511 Security Bypass Vulnerability

Entryinfo

Created: 04/20/2016 11:03
Updated: 11/18/2024 05:56
Changes: 04/20/2016 11:03 (52), 10/14/2018 08:51 (22), 07/25/2022 10:55 (2), 11/18/2024 05:56 (18)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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