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

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

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 databases at Tenable (211098) and EUVD (EUVD-2022-45046). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

Website

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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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 🔍
08/10/2026 +1363 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
EUVD: 🔍

Entryinfo

Created: 11/16/2022 08:31
Updated: 08/10/2026 20:40
Changes: 11/16/2022 08:31 (50), 12/19/2022 09:05 (12), 11/17/2024 07:13 (16), 08/10/2026 20:40 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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