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Photon OS 1.0: Libsepol PHSA-2021-1.0-0435

low Nessus Plugin ID 153935

Synopsis

The remote PhotonOS host is missing multiple security updates.

Description

An update of the libsepol package has been released.

 - The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list). (CVE-2021-36086)

 - The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from
 __cil_verify_classpermission and __cil_pre_verify_helper). (CVE-2021-36084)

 - The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from
 __verify_map_perm_classperms and hashtab_map). (CVE-2021-36085)

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 Linux packages.

See Also

https://github.com/vmware/photon/wiki/Security-Updates-1.0-435.md

Plugin Details

Severity: Low

ID: 153935

File Name: PhotonOS_PHSA-2021-1_0-0435_libsepol.nasl

Version: 1.4

Type: local

Published: 10/7/2021

Updated: 11/28/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2021-36086

CVSS v3

Risk Factor: Low

Base Score: 3.3

Temporal Score: 3

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

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

Vulnerability Information

CPE: p-cpe:/a:vmware:photonos:libsepol, cpe:/o:vmware:photonos:1.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/21/2021

Vulnerability Publication Date: 7/1/2021

Reference Information

CVE: CVE-2021-36084, CVE-2021-36085, CVE-2021-36086