CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVE-2021-23177
High (7.8). EPSS 0.4% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-31)
- CWE
- CWE-59
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- fedoraproject:fedora
- libarchive:libarchive
- redhat:codeready_linux_builder
- redhat:enterprise_linux
- redhat:enterprise_linux_eus
- redhat:enterprise_linux_for_ibm_z_systems
- redhat:enterprise_linux_for_ibm_z_systems_eus
- redhat:enterprise_linux_for_power_little_endian
- redhat:enterprise_linux_for_power_little_endian_eus
- redhat:enterprise_linux_server_aus
- redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
- redhat:enterprise_linux_server_tus
References
- https://access.redhat.com/security/cve/CVE-2021-23177
- https://bugzilla.redhat.com/show_bug.cgi?id=2024245
- https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad
- https://github.com/libarchive/libarchive/issues/1565
- https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html