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Vulnerability details: VCID-6dre-2n2j-aaaj
Vulnerability ID VCID-6dre-2n2j-aaaj
Aliases CVE-2021-23239
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-59 Improper Link Resolution Before File Access ('Link Following')
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-203 Observable Discrepancy
System Score Found at
generic_textual Low http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23239.html
rhas Low https://access.redhat.com/errata/RHSA-2021:1723
cvssv3 2.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23239.json
epss 0.0004 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
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epss 0.0004 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
epss 0.0004 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
epss 0.0004 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
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epss 0.0004 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
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epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
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epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
epss 0.00092 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
epss 0.00092 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
epss 0.00092 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
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epss 0.00092 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
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epss 0.00092 https://api.first.org/data/v1/epss?cve=CVE-2021-23239
rhbs low https://bugzilla.redhat.com/show_bug.cgi?id=1915052
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23239
cvssv3.1 2.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 1.9 https://nvd.nist.gov/vuln/detail/CVE-2021-23239
cvssv3 2.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23239
cvssv3.1 2.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23239
archlinux Critical https://security.archlinux.org/AVG-1431
generic_textual High https://ubuntu.com/security/notices/USN-4705-1
generic_textual Low https://www.openwall.com/lists/oss-security/2021/01/11/2
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23239.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23239.json
https://api.first.org/data/v1/epss?cve=CVE-2021-23239
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2021-23239
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23239
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2022/11/msg00007.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMY4VSSBIND7VAYSN6T7XIWJRWG4GBB3/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GMY4VSSBIND7VAYSN6T7XIWJRWG4GBB3/
https://security.gentoo.org/glsa/202101-33
https://security.netapp.com/advisory/ntap-20210129-0010/
https://ubuntu.com/security/notices/USN-4705-1
https://www.openwall.com/lists/oss-security/2021/01/11/2
https://www.sudo.ws/stable.html#1.9.5
1915052 https://bugzilla.redhat.com/show_bug.cgi?id=1915052
ASA-202101-25 https://security.archlinux.org/ASA-202101-25
AVG-1431 https://security.archlinux.org/AVG-1431
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
CVE-2021-23239 https://nvd.nist.gov/vuln/detail/CVE-2021-23239
RHSA-2021:1723 https://access.redhat.com/errata/RHSA-2021:1723
USN-4705-1 https://usn.ubuntu.com/4705-1/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23239.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23239
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23239
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23239
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.09068
EPSS Score 0.0004
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.