Vulnerability Name:

CVE-2021-4154 (CCN-220118)

Assigned:2021-12-14
Published:2021-12-14
Updated:2023-01-19
Summary:A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
7.7 High (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-416
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2021-4154

Source: CCN
Type: Red Hat Bugzilla - Bug 2034514
(CVE-2021-4154) - CVE-2021-4154 kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout

Source: secalert@redhat.com
Type: Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: Third Party Advisory
secalert@redhat.com

Source: XF
Type: UNKNOWN
linux-kernel-cve20214154-priv-esc(220118)

Source: CCN
Type: linux.git Web site
cgroup: verify that source is a string

Source: secalert@redhat.com
Type: Mailing List, Patch, Vendor Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: Third Party Advisory
secalert@redhat.com

Source: CCN
Type: IBM Security Bulletin 6596971 (Spectrum Protect Plus)
Multiple vulnerabilities in Linux Kernel affect IBM Spectrum Protect Plus

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::nfv:*:*:*:*:*
    • Configuration RedHat 3:
  • cpe:/a:redhat:enterprise_linux:8::realtime:*:*:*:*:*
    • Configuration RedHat 4:
  • cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*
    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*
    • Configuration RedHat 6:
  • cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:-:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:spectrum_protect_plus:10.1.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:1750
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:42284
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:1234
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:1760
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:42381
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:1559
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:1350
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:481
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:1803
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:890
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:42383
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:1596
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:42282
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:1168
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:com.redhat.rhsa:def:20220849
    P
    		RHSA-2022:0849: kpatch-patch security update (Important)
    2022-03-14
    oval:com.redhat.rhsa:def:20220819
    P
    		RHSA-2022:0819: kernel-rt security and bug fix update (Important)
    2022-03-10
    oval:com.redhat.rhsa:def:20220825
    P
    		RHSA-2022:0825: kernel security, bug fix, and enhancement update (Important)
    2022-03-10
    oval:org.opensuse.security:def:101996
    P
    		Security update for the Linux Kernel (Live Patch 1 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:1417
    P
    		Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:118238
    P
    		Security update for the Linux Kernel (Live Patch 13 for SLE 15 SP2) (Important)
    2022-02-02
    oval:org.opensuse.security:def:101997
    P
    		Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:1415
    P
    		Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:118236
    P
    		Security update for the Linux Kernel (Live Patch 10 for SLE 15 SP2) (Important)
    2022-02-02
    oval:org.opensuse.security:def:101995
    P
    		Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:1416
    P
    		Security update for the Linux Kernel (Live Patch 1 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:118237
    P
    		Security update for the Linux Kernel (Live Patch 11 for SLE 15 SP2) (Important)
    2022-02-02
    oval:org.opensuse.security:def:1408
    P
    		Security update for the Linux Kernel (Live Patch 5 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:118223
    P
    		Security update for the Linux Kernel (Live Patch 15 for SLE 15 SP2) (Important)
    2022-02-01
    oval:org.opensuse.security:def:101988
    P
    		Security update for the Linux Kernel (Live Patch 5 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:1413
    P
    		Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:118224
    P
    		Security update for the Linux Kernel (Live Patch 12 for SLE 15 SP2) (Important)
    2022-02-01
    oval:org.opensuse.security:def:101993
    P
    		Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:1407
    P
    		Security update for the Linux Kernel (Live Patch 4 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:101987
    P
    		Security update for the Linux Kernel (Live Patch 4 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:118208
    P
    		Security update for the Linux Kernel (Live Patch 17 for SLE 15 SP2) (Important)
    2022-01-31
    oval:org.opensuse.security:def:118216
    P
    		Security update for the Linux Kernel (Live Patch 16 for SLE 15 SP2) (Important)
    2022-01-31
    oval:org.opensuse.security:def:118218
    P
    		Security update for the Linux Kernel (Live Patch 14 for SLE 15 SP2) (Important)
    2022-01-31
    oval:org.opensuse.security:def:118205
    P
    		Security update for the Linux Kernel (Live Patch 18 for SLE 15 SP2) (Important)
    2022-01-31
    BACK
    linux linux kernel -
    ibm spectrum protect plus 10.1.0