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Fedora 35 : heimdal (2022-cbbd105d08)

critical Nessus Plugin ID 169244

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Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 35 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-cbbd105d08 advisory.

 - A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
 (CVE-2021-3671)

 - 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. (CVE-2022-41916)

 - This release fixes the following Security Vulnerabilities: * CVE-2022-42898 PAC parse integer overflows * CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour * CVE-2022-41916 Fix Unicode normalization read of 1 bytes past end of array * CVE-2021-44758 NULL dereference DoS in SPNEGO acceptors
 * CVE-2021-3671 A null pointer de-reference when handling missing sname in TGS-REQ * CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec Note that CVE-2022-44640 is a severe vulnerability, possibly a 10.0 on the Common Vulnerability Scoring System (CVSS) v3. (CVE-2021-44758, CVE-2022-44640)

 - The vulnerability exists due to a boundary error within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. A remote user can send specially crafted data to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack. (CVE-2022-3437)

 - krb5: integer overflow vulnerabilities in PAC parsing (CVE-2022-42898)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected heimdal package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2022-cbbd105d08

Plugin Details

Severity: Critical

ID: 169244

File Name: fedora_2022-cbbd105d08.nasl

Version: 1.2

Type: local

Agent: unix

Published: 12/23/2022

Updated: 9/12/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2021-3671

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2022-44640

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:35, p-cpe:/a:fedoraproject:fedora:heimdal

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/21/2022

Vulnerability Publication Date: 10/12/2021

Reference Information

CVE: CVE-2021-3671, CVE-2021-44758, CVE-2022-3437, CVE-2022-41916, CVE-2022-42898, CVE-2022-44640