ISC BIND up to 9.11.21/9.16.5/9.17.3/9.1.21-S1 PKCS11 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

A vulnerability classified as problematic was found in ISC BIND up to 9.11.21/9.16.5/9.17.3/9.1.21-S1 (Domain Name Software). This vulnerability affects an unknown function of the component PKCS11 Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash. To be vulnerable, the system must: * be running BIND that was built with "--enable-native-pkcs11" * be signing one or more zones with an RSA key * be able to receive queries from a possible attacker

The weakness was shared 08/21/2020 (Website). The advisory is available at kb.isc.org. This vulnerability was named CVE-2020-8623 since 02/05/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 9.11.22, 9.16.6, 9.17.4 or 9.1.22 eliminates this vulnerability.

The entries 160175, 160173, 160172 and 160171 are related to this item.

Productinfo

Type

Vendor

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: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

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: BIND 9.11.22/9.16.6/9.17.4/9.1.22

Timelineinfo

02/05/2020 🔍
08/21/2020 +198 days 🔍
08/22/2020 +1 days 🔍
11/11/2020 +80 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: kb.isc.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-8623 (🔍)
See also: 🔍

Entryinfo

Created: 08/22/2020 09:24
Updated: 11/11/2020 00:28
Changes: 08/22/2020 09:24 (40), 08/22/2020 09:29 (12), 11/11/2020 00:20 (1), 11/11/2020 00:28 (1)
Complete: 🔍

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