VDB-213775 · CVE-2022-41916 · GHSA-mgqr-gvh6-23cx

Heimdal up to 7.7.0 KDC/kinit off-by-one

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.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Heimdal up to 7.7.0. Affected by this issue is some unknown functionality of the component KDC/kinit. This manipulation causes off-by-one. This vulnerability is registered as CVE-2022-41916. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Heimdal up to 7.7.0. It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component KDC/kinit. The manipulation with an unknown input leads to a off-by-one vulnerability. The CWE definition for the vulnerability is CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. As an impact it is known to affect availability. The summary by CVE is:

Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue.

The weakness was published 11/16/2022 as GHSA-mgqr-gvh6-23cx. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2022-41916 since 09/30/2022. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211098 (Fedora 37 : heimdal (2022-2c77cee4b5)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.7.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211098). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Heimdal

Version

Website

Product: https://github.com/heimdal/heimdal/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.9
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Off-by-one
CWE: CWE-193 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 211098
Nessus Name: Fedora 37 : heimdal (2022-2c77cee4b5)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Heimdal 7.7.1

Timelineinfo

09/30/2022 🔍
11/16/2022 +47 days 🔍
11/16/2022 +0 days 🔍
11/17/2024 +732 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-mgqr-gvh6-23cx
Status: Confirmed

CVE: CVE-2022-41916 (🔍)
GCVE (CVE): GCVE-0-2022-41916
GCVE (VulDB): GCVE-100-213775

Entryinfo

Created: 11/16/2022 08:31
Updated: 11/17/2024 07:13
Changes: 11/16/2022 08:31 (50), 12/19/2022 09:05 (12), 11/17/2024 07:13 (16)
Complete: 🔍
Cache ID: 216::103