GLSA-202310-06 : Heimdal: Multiple Vulnerabilities

critical Nessus Plugin ID 182758

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Description

The remote host is affected by the vulnerability described in GLSA-202310-06 (Heimdal: Multiple Vulnerabilities)

- All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set. (CVE-2019-14870)

- Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept. (CVE-2021-44758)

- A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack. (CVE-2022-3437)

- A vulnerability classified as critical was found in SourceCodester eLearning System 1.0. This vulnerability affects unknown code of the file /admin/students/manage.php. The manipulation of the argument id leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-212014 is the identifier assigned to this vulnerability.
(CVE-2022-3671)

- 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)

- PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has a similar bug.
(CVE-2022-42898)

- Heimdal before 7.7.1 allows remote attackers to execute arbitrary code because of an invalid free in the ASN.1 codec used by the Key Distribution Center (KDC). (CVE-2022-44640)

- The fix for CVE-2022-3437 included changing memcmp to be constant time and a workaround for a compiler bug by adding != 0 comparisons to the result of memcmp. When these patches were backported to the heimdal-7.7.1 and heimdal-7.8.0 branches (and possibly other branches) a logic inversion sneaked in causing the validation of message integrity codes in gssapi/arcfour to be inverted. (CVE-2022-45142)

- Please review the referenced CVE identifiers for details. (CVE-2022-44758)

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

Solution

All Cross-realm trust vulnerability in Heimdal users should upgrade to the latest version:

# emerge --sync # emerge --ask --oneshot --verbose >=app-crypt/heimdal-7.8.0-r1

Plugin Details

Severity: Critical

ID: 182758

File Name: gentoo_GLSA-202310-06.nasl

Version: 1.2

Type: local

Family: Gentoo Local Security Checks

Published: 10/8/2023

Updated: 12/22/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

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

CVSS Score Source: CVE-2019-14870

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: p-cpe:/a:gentoo:linux:heimdal, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/8/2023

Vulnerability Publication Date: 12/10/2019

Reference Information

CVE: CVE-2019-14870, CVE-2021-44758, CVE-2022-3437, CVE-2022-3671, CVE-2022-41916, CVE-2022-42898, CVE-2022-44640, CVE-2022-44758, CVE-2022-45142

Detections

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