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CBL Mariner 2.0 Security Update: libtar (CVE-2021-33640)

critical Nessus Plugin ID 172853

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of libtar installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-33640 advisory.

 - After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a result, the released memory is used (use-after-free). (CVE-2021-33640)

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2021-33640

Plugin Details

Severity: Critical

ID: 172853

File Name: mariner_libtar_CVE-2021-33640.nasl

Version: 1.1

Type: local

Published: 3/20/2023

Updated: 3/28/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2021-33640

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: x-cpe:/o:microsoft:cbl-mariner, p-cpe:/a:microsoft:cbl-mariner:libtar, p-cpe:/a:microsoft:cbl-mariner:libtar-devel, p-cpe:/a:microsoft:cbl-mariner:libtar-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/10/2023

Vulnerability Publication Date: 12/19/2022

Reference Information

CVE: CVE-2021-33640