CVE-2021-23239

lowpriority · track · 10EPSS 0.010 · 64 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.04% (64th) EPSS

CVSS 1.9 · low

Is it mine?

34 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_edit.c race condition in replacing a user-controlled directory by a symlink to an arbitrary path.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedsudo-0:1.8.29-7.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-0:1.8.29-7.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-0:1.8.29-7.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-0:1.8.29-7.el8.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-0:1.8.29-7.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-debuginfo-0:1.8.29-7.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-debuginfo-0:1.8.29-7.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-debuginfo-0:1.8.29-7.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-debuginfo-0:1.8.29-7.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-debugsource-0:1.8.29-7.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-debugsource-0:1.8.29-7.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-debugsource-0:1.8.29-7.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Fixedsudo-debugsource-0:1.8.29-7.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:1723
Workaroundsudo-0:1.8.29-7.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-0:1.8.29-7.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-0:1.8.29-7.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-0:1.8.29-7.el8.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-0:1.8.29-7.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-debuginfo-0:1.8.29-7.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-debuginfo-0:1.8.29-7.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-debuginfo-0:1.8.29-7.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-debuginfo-0:1.8.29-7.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-debugsource-0:1.8.29-7.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-debugsource-0:1.8.29-7.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-debugsource-0:1.8.29-7.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.
Workaroundsudo-debugsource-0:1.8.29-7.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)redhat_csaf
Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.

cvss

Technical severity, 0–10. One row per scoring source.

2.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.01.9lowAV:L/AC:M/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 3.4 · impact 2.9

v3.12.5lowCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 1 · impact 1.4

v3.12.5lowAV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.12.3lowCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.12.5lowCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-59USprimaryCWE-367USCWE-59US

affected products (34)

Products and version ranges known to be affected.

IBM InfoSphere Information Serverall versionscert_bundDEcpe:/a:ibm:infosphere_information_server:-
IBM QRadar SIEM 7.3all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.3
IBM QRadar SIEM 7.4all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.4
IBM QRadar SIEM 7.5.0all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.5.0
n/a n/a≤ n/aenisa_euvdEU
Todd C. Miller Sudo≤ 1.8.32fstec_bduRU
Todd C. Miller Sudo1.9.0 → 1.9.5fstec_bduRU
АО «Концерн ВНИИНС» ОС ОН «Стрелец»≤ 16.01.2023fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.7fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.6 «Смоленск»fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 4.7fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 11fstec_bduRU
debian debian linux= 10.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
fedoraproject fedora= 32nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 33nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
netapp cloud backupall versionsnvdUScpe:2.3:a:netapp:cloud_backup:*:*:*:*:*:*:*:*
netapp hci management nodeall versionsnvdUScpe:2.3:a:netapp:hci_management_node:*:*:*:*:*:*:*:*
netapp solidfireall versionsnvdUScpe:2.3:a:netapp:solidfire:*:*:*:*:*:*:*:*
sudo project sudo< 1.8.32nvdUScpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*

showing 20 of 34

advisories (2)

Vendor and ecosystem advisories describing this.

RHSA-2021:1723Red Hat Security Advisory: sudo security and bug fix update2021-05-18csaf · redhat_csafUS
An update for sudo is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
WID-SEC-W-2025-0227IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2021-11-30csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um seine Privilegien zu erweitern, Administratorrechte zu erlangen, beliebigen Programmcode auszuführen, Informationen offenzulegen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd redhat_csaf NVD CVE.org MITRE

published 2021-01-12modified 2026-06-17

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+2367 more

references (35)

External citations — patches, advisories, analysis.

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