Vulnerability in Libarchive
CVE-2021-31566
An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who wo…
EPSS: 0.004 (29.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Libarchive
- Splunk Universal_forwarder — versions 9.1.0
- Debian Debian_linux — versions 10.0
- Fedoraproject Fedora — versions 35
- Redhat Codeready_linux_builder
- Redhat Enterprise_linux — versions 8.0
- Redhat Enterprise_linux_eus — versions 8.6
- Redhat Enterprise_linux_for_ibm_z_systems — versions 8.0
- Redhat Enterprise_linux_for_ibm_z_systems_eus — versions 8.6
- Redhat Enterprise_linux_for_power_little_endian — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch, Third Party Advisory)
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-31566?
- CVE-2021-31566 is a high-severity vulnerability in Libarchive, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2022-08-23.
- How severe is CVE-2021-31566?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-31566 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.