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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:169757
[Eng]
Version
11
Class
vulnerability
ALTXid
380094
Language
Russian
Severity
High
Title
Red Hat/CentOS -- уязвимость в RHV-H, polkit (CVE-2021-4034)
Description
В продуктах RHV-H, polkit обнаружена уязвимость CVE-2021-4034.
Family
unix
Platform
CentOS Linux 7
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 7.3
Red Hat Enterprise Linux 7.4
Red Hat Enterprise Linux 7.6
Red Hat Enterprise Linux 7.7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.1
Red Hat Enterprise Linux 8.2
Red Hat Enterprise Linux 8.4
Product
polkit
RHV-H
Reference
VENDOR: RHSA-2022:0443
VENDOR: RHSA-2022:0443
Id:
RHSA-2022:0443
Reference:
https://access.redhat.com/errata/RHSA-2022:0443
packetstormsecurity: Polkit-pkexec-Local-Privilege-Escalation
packetstormsecurity: Polkit-pkexec-Local-Privilege-Escalation
Id:
Polkit-pkexec-Local-Privilege-Escalation
Reference:
https://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html
packetstormsecurity: Polkit-pkexec-Privilege-Escalation
packetstormsecurity: Polkit-pkexec-Privilege-Escalation
Id:
Polkit-pkexec-Privilege-Escalation
Reference:
https://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html
VENDOR: RHSA-2022:0268
VENDOR: RHSA-2022:0268
Id:
RHSA-2022:0268
Reference:
https://access.redhat.com/errata/RHSA-2022:0268
NKCKI: VULN-20220209.3
NKCKI: VULN-20220209.3
Id:
VULN-20220209.3
Reference:
https://safe-surf.ru/upload/VULN/VULN-20220209.3.pdf
NKCKI: VULN-20220127.1
NKCKI: VULN-20220127.1
Id:
VULN-20220127.1
Reference:
https://safe-surf.ru/upload/VULN/VULN-20220127.1.pdf
FSTEC: BDU:2022-00488
FSTEC: BDU:2022-00488
Id:
BDU:2022-00488
Reference:
https://bdu.fstec.ru/vul/2022-00488
CVE: CVE-2021-4034
CVE: CVE-2021-4034
Id:
CVE-2021-4034
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4034
Comment
: A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.
CVSSv2 Score:
7.2
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSSv3 Score:
7.8
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
125 (Out-of-bounds Read)
References:
https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt (MISC)
https://access.redhat.com/security/vulnerabilities/RHSB-2022-001 (MISC)
https://bugzilla.redhat.com/show_bug.cgi?id=2025869 (MISC)
https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683 (MISC)
http://packetstormsecurity.com/files/166196/Polkit-pkexec-Local-Privilege-Escalation.html (MISC)
http://packetstormsecurity.com/files/166200/Polkit-pkexec-Privilege-Escalation.html (MISC)
https://www.suse.com/support/kb/doc/?id=000020564 (MISC)
https://www.oracle.com/security-alerts/cpuapr2022.html (MISC)
https://cert-portal.siemens.com/productcert/pdf/ssa-330556.pdf (CONFIRM)
https://www.starwindsoftware.com/security/sw-20220818-0001/ (MISC)
https://www.secpod.com/blog/local-privilege-escalation-vulnerability-in-major-linux-distributions-cve-2021-4034/ (MISC)
VENDOR: RHSA-2022:0272
VENDOR: RHSA-2022:0272
Id:
RHSA-2022:0272
Reference:
https://access.redhat.com/errata/RHSA-2022:0272
VENDOR: RHSA-2022:0271
VENDOR: RHSA-2022:0271
Id:
RHSA-2022:0271
Reference:
https://access.redhat.com/errata/RHSA-2022:0271
VENDOR: RHSA-2022:0270
VENDOR: RHSA-2022:0270
Id:
RHSA-2022:0270
Reference:
https://access.redhat.com/errata/RHSA-2022:0270
VENDOR: RHSA-2022:0269
VENDOR: RHSA-2022:0269
Id:
RHSA-2022:0269
Reference:
https://access.redhat.com/errata/RHSA-2022:0269
VENDOR: RHSA-2022:0267
VENDOR: RHSA-2022:0267
Id:
RHSA-2022:0267
Reference:
https://access.redhat.com/errata/RHSA-2022:0267
VENDOR: RHSA-2022:0266
VENDOR: RHSA-2022:0266
Id:
RHSA-2022:0266
Reference:
https://access.redhat.com/errata/RHSA-2022:0266
VENDOR: RHSA-2022:0265
VENDOR: RHSA-2022:0265
Id:
RHSA-2022:0265
Reference:
https://access.redhat.com/errata/RHSA-2022:0265
VENDOR: RHSA-2022:0273
VENDOR: RHSA-2022:0273
Id:
RHSA-2022:0273
Reference:
https://access.redhat.com/errata/RHSA-2022:0273
VENDOR: RHSA-2022:0274
VENDOR: RHSA-2022:0274
Id:
RHSA-2022:0274
Reference:
https://access.redhat.com/errata/RHSA-2022:0274
CESA-2022:0274: CESA-2022:0274
CESA-2022:0274: CESA-2022:0274
Id:
CESA-2022:0274
Reference:
http://lists.centos.org/pipermail/centos-announce/2022-January/073552.html
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