dirmngr up to 2.0.x System Call Crafted Certificate certificate validation

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability classified as problematic was found in dirmngr up to 2.0.x. Affected by this vulnerability is some unknown functionality of the component System Call Handler. The manipulation as part of a Crafted Certificate leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect availability. The summary by CVE is:

dirmngr before 2.1.0 improperly handles certain system calls, which allows remote attackers to cause a denial of service (DOS) via a specially-crafted certificate.

The weakness was shared 11/27/2019 (oss-sec). The advisory is shared at openwall.com. This vulnerability is known as CVE-2011-2207 since 05/31/2011. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1587.003 for this issue.

Upgrading to version 2.1.0 eliminates this vulnerability.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
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: Certificate validation
CWE: CWE-295 / CWE-287
ATT&CK: T1587.003

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: dirmngr 2.1.0

Timelineinfo

05/31/2011 🔍
11/27/2019 +3102 days 🔍
11/28/2019 +1 days 🔍
11/28/2019 +0 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined

CVE: CVE-2011-2207 (🔍)

Entryinfo

Created: 11/28/2019 06:52
Updated: 11/28/2019 06:57
Changes: 11/28/2019 06:52 (39), 11/28/2019 06:57 (17)
Complete: 🔍

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