CVE-2022-41916 Read one byte past a buffer when normalizing Unicode

2022-11-1500:00:00

CWE-193

GitHub_M

www.cve.org

denial of service

heimdal

pki certificate validation

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

8.6 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

72.4%

JSON

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.

CNA Affected

[
  {
    "vendor": "heimdal",
    "product": "heimdal",
    "versions": [
      {
        "version": "< 7.7.1",
        "status": "affected"
      }
    ]
  }
]