CVE-2021-23177

An improper link resolution flaw while extracting an archive can lead to changing the access control list (ACL) of the target of the link. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to change the ACL of a file on the system and gain more privileges.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2021-23177	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2024245	Issue Tracking Patch Third Party Advisory
https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad	Patch Third Party Advisory
https://github.com/libarchive/libarchive/issues/1565	Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html	Mailing List Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-23177	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2024245	Issue Tracking Patch Third Party Advisory
https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad	Patch Third Party Advisory
https://github.com/libarchive/libarchive/issues/1565	Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:libarchive:libarchive:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:::::::*

Configuration 4 (hide)

AND

cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:::::::*

Configuration 5 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

History

21 Nov 2024, 05:51

Type	Values Removed	Values Added
References	~~() https://access.redhat.com/security/cve/CVE-2021-23177 - Third Party Advisory~~	() https://access.redhat.com/security/cve/CVE-2021-23177 - Third Party Advisory
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=2024245 - Issue Tracking, Patch, Third Party Advisory~~	() https://bugzilla.redhat.com/show_bug.cgi?id=2024245 - Issue Tracking, Patch, Third Party Advisory
References	~~() https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad - Patch, Third Party Advisory~~	() https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad - Patch, Third Party Advisory
References	~~() https://github.com/libarchive/libarchive/issues/1565 - Issue Tracking, Patch, Third Party Advisory~~	() https://github.com/libarchive/libarchive/issues/1565 - Issue Tracking, Patch, Third Party Advisory
References	~~() https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html - Mailing List, Third Party Advisory~~	() https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html - Mailing List, Third Party Advisory

Information

Published : 2022-08-23 16:15

Updated : 2024-11-21 05:51

NVD link : CVE-2021-23177

Mitre link : CVE-2021-23177

CVE.ORG link : CVE-2021-23177

JSON object : View

Products Affected

debian

debian_linux

redhat

enterprise_linux
enterprise_linux_for_power_little_endian
enterprise_linux_server_aus
enterprise_linux_for_ibm_z_systems
enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
enterprise_linux_for_ibm_z_systems_eus
enterprise_linux_eus
codeready_linux_builder
enterprise_linux_for_power_little_endian_eus
enterprise_linux_server_tus

fedoraproject

fedora

libarchive

libarchive

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to change the ACL of a file on the system and gain more privileges."}, {"lang": "es", "value": "Un fallo de resoluci\u00f3n de enlaces inapropiado mientras es extra\u00eddo un archivo puede conllevar a un cambio de la lista de control de acceso (ACL) del objetivo del enlace. Un atacante puede proporcionar un archivo malicioso a un usuario v\u00edctima, que desencadenar\u00eda este fallo cuando intentara extraer el archivo. Un atacante local puede usar este fallo para cambiar la ACL de un archivo en el sistema y conseguir m\u00e1s privilegios."}], "lastModified": "2024-11-21T05:51:19.970", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:libarchive:libarchive:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A55FBDE8-F405-4C72-BCDC-756873D578C9", "versionEndExcluding": "3.5.2"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6C3741B8-851F-475D-B428-523F4F722350"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "87C21FE1-EA5C-498F-9C6C-D05F91A88217"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9EF5C4AC-CA69-41E3-AD93-7AC21931374A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "47811209-5CE5-4375-8391-B0A7F6A0E420"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "729C515E-1DD3-466D-A50B-AFE058FFC94A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "76C24D94-834A-4E9D-8F73-624AFA99AAA2"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "871A5C26-DB7B-4870-A5B2-5DD24C90B4A7"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1272DF03-7674-4BD4-8E64-94004B195448"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1CD81C46-328B-412D-AF4E-68A2AD2F1A73"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "6C3741B8-851F-475D-B428-523F4F722350"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "87C21FE1-EA5C-498F-9C6C-D05F91A88217"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "9EF5C4AC-CA69-41E3-AD93-7AC21931374A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "47811209-5CE5-4375-8391-B0A7F6A0E420"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "729C515E-1DD3-466D-A50B-AFE058FFC94A"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}

7.8 /10