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Fedora 36 : libtar (2022-ccc68b06cc)

critical Nessus Plugin ID 169344

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Synopsis

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

Description

The remote Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-ccc68b06cc 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)

 - An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read. (CVE-2021-33643)

 - An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longname, causing an out-of-bounds read. (CVE-2021-33644)

 - The th_read() function doesn't free a variable t->th_buf.gnu_longlink after allocating memory, which may cause a memory leak. (CVE-2021-33645)

 - The th_read() function doesn't free a variable t->th_buf.gnu_longname after allocating memory, which may cause a memory leak. (CVE-2021-33646)

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 libtar package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2022-ccc68b06cc

Plugin Details

Severity: Critical

ID: 169344

File Name: fedora_2022-ccc68b06cc.nasl

Version: 1.1

Type: local

Agent: unix

Published: 12/28/2022

Updated: 12/30/2022

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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: cpe:/o:fedoraproject:fedora:36, p-cpe:/a:fedoraproject:fedora:libtar

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/19/2022

Vulnerability Publication Date: 8/10/2022

Reference Information

CVE: CVE-2021-33640, CVE-2021-33643, CVE-2021-33644, CVE-2021-33645, CVE-2021-33646