Libgcrypt up to 1.8.0 Curve25519 cipher/ecc.c information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Libgcrypt up to 1.8.0. This impacts an unknown function of the file cipher/ecc.c of the component Curve25519. The manipulation results in information disclosure. This vulnerability is identified as CVE-2017-0379. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Libgcrypt up to 1.8.0. Affected is an unknown part of the file cipher/ecc.c of the component Curve25519. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

Libgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for attackers to discover a secret key, related to cipher/ecc.c and mpi/ec.c.

The bug was discovered 08/27/2017. The weakness was released 08/29/2017 (Website). The advisory is available at securityfocus.com. This vulnerability is traded as CVE-2017-0379 since 11/29/2016. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102826 (Debian DSA-3959-1 : 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 276953 (Fedora Security Update for libgcrypt (FEDORA-2017-bcdeca9d41)).

Upgrading to version 1.8.1 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 Tenable (102826) and SecurityFocus (BID 100503†). Entries connected to this vulnerability are available at VDB-79791, VDB-95830, VDB-97118 and VDB-99028. 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: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102826
Nessus Name: Debian DSA-3959-1 : libgcrypt20 - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53375
OpenVAS Name: Debian Security Advisory DSA 3959-1 (libgcrypt20 - security update)
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: 🔍

Upgrade: Libgcrypt 1.8.1
Patch: da780c8183cccc8f533c8ace8211ac2cb2bdee7b

Timelineinfo

11/29/2016 🔍
08/27/2017 +271 days 🔍
08/27/2017 +0 days 🔍
08/29/2017 +2 days 🔍
08/29/2017 +0 days 🔍
08/29/2017 +0 days 🔍
08/30/2017 +1 days 🔍
08/30/2017 +0 days 🔍
12/27/2022 +1945 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: NIIBE Yutaka
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-0379 (🔍)
GCVE (CVE): GCVE-0-2017-0379
GCVE (VulDB): GCVE-100-105906

OVAL: 🔍

SecurityFocus: 100503 - libgcrypt CVE-2017-0379 Information Disclosure Vulnerability
SecurityTracker: 1041294

See also: 🔍

Entryinfo

Created: 08/30/2017 08:50
Updated: 12/27/2022 07:41
Changes: 08/30/2017 08:50 (70), 11/11/2019 15:23 (11), 01/10/2021 09:52 (2), 01/10/2021 09:58 (1), 12/27/2022 07:41 (4)
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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