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Slackware Linux 15.0 / current krb5 Vulnerability (SSA:2023-193-01)

medium Nessus Plugin ID 178217

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Synopsis

The remote Slackware Linux host is missing a security update to krb5.

Description

The version of krb5 installed on the remote host is prior to 1.19.2 / 1.21.1. It is, therefore, affected by a vulnerability as referenced in the SSA:2023-193-01 advisory.

 - lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because
 _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count. (CVE-2023-36054)

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

Solution

Upgrade the affected krb5 package.

See Also

http://www.nessus.org/u?8dca8a10

Plugin Details

Severity: Medium

ID: 178217

File Name: Slackware_SSA_2023-193-01.nasl

Version: 1.5

Type: local

Published: 7/12/2023

Updated: 10/23/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-36054

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:slackware:slackware_linux:15.0, cpe:/o:slackware:slackware_linux, p-cpe:/a:slackware:slackware_linux:krb5

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Ease: No known exploits are available

Patch Publication Date: 7/12/2023

Vulnerability Publication Date: 7/12/2023

Reference Information

CVE: CVE-2023-36054