CVE & CISA-KEV Catalog

CVE-2021-31566

HIGH
7.8
CVSS v3
NVD

Description

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 would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.

How to fix

Remediation Available
libarchiveDebian
Fixed in:3.4.3-2+deb11u1CVE-2021-31566
Fixed in:3.5.2-1CVE-2021-31566
Fixed in:3.5.2-1CVE-2021-31566
Fixed in:3.5.2-1CVE-2021-31566
libarchiveUbuntu
Fixed in:3.4.0-2ubuntu1.1USN-5291-1
libarchive13Ubuntu
Fixed in:3.4.0-2ubuntu1.1USN-5291-1
UniversalForwarderWindows application
Affected:8.2.0 8.2.12Fixed in:8.2.12Splunk, Inc.
Affected:9.0.0 9.0.6Fixed in:9.0.6Splunk, Inc.

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

0.37%probability of exploitation in 30 days
29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Related Vulnerabilities

Other CWE-59 (Link Following) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2022-30333High7.599%KEV + RansomFix
CVE-2021-21300High8.089%-Fix
CVE-2021-32610High7.173%-Fix
CVE-2020-36193High7.571%KEVFix
CVE-2023-40028Medium4.958%-Fix
CVE-2020-0787High7.843%KEV + Ransom-
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.