VDB-142218 · CVE-2019-13627 · USN-4236-1

libgcrypt20 1.6.3-2+deb8u4/1.7.6-2+deb9u3/1.8.4-5 ECDSA race condition

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.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in libgcrypt20 1.6.3-2+deb8u4/1.7.6-2+deb9u3/1.8.4-5. It has been declared as critical. Affected is an unknown function of the component ECDSA. The manipulation results in race condition. This vulnerability was named CVE-2019-13627. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in libgcrypt20 1.6.3-2+deb8u4/1.7.6-2+deb9u3/1.8.4-5. Affected is some unknown processing of the component ECDSA. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

It was discovered that there was a ECDSA timing attack in the libgcrypt20 cryptographic library. Version affected: 1.8.4-5, 1.7.6-2+deb9u3, and 1.6.3-2+deb8u4. Versions fixed: 1.8.5-2 and 1.6.3-2+deb8u7.

The weakness was presented 09/25/2019 (Website). The advisory is available at lists.debian.org. This vulnerability is traded as CVE-2019-13627 since 07/17/2019. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 1.6.3-2+deb8u7 or 1.8.5-2 eliminates this vulnerability.

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

Productinfo

Name

libgcrypt20

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libgcrypt20 1.6.3-2+deb8u7/1.8.5-2

Timelineinfo

07/17/2019 🔍
09/25/2019 +70 days 🔍
09/26/2019 +1 days 🔍
12/27/2023 +1553 days 🔍

Sourcesinfo

Advisory: USN-4236-1
Status: Not defined

CVE: CVE-2019-13627 (🔍)
GCVE (CVE): GCVE-0-2019-13627
GCVE (VulDB): GCVE-100-142218

Entryinfo

Created: 09/26/2019 08:43
Updated: 12/27/2023 16:56
Changes: 09/26/2019 08:43 (39), 09/08/2020 09:36 (17), 12/27/2023 16:56 (5)
Complete: 🔍
Cache ID: 216::103