CVE-2021-31566
Estado: ModificadaAlta (7.8)—
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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.39%
- Percentil entre todas las CVEs puntuadas: 30
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (14)
Debian — Debian LinuxFedoraproject — FedoraLibarchive — LibarchiveRedhat — Codeready Linux BuilderRedhat — Enterprise LinuxRedhat — Enterprise Linux EUSRedhat — Enterprise Linux FOR IBM Z SystemsRedhat — Enterprise Linux FOR IBM Z Systems EUSRedhat — Enterprise Linux FOR Power Little EndianRedhat — Enterprise Linux FOR Power Little Endian EUSRedhat — Enterprise Linux Server AUSRedhat — Enterprise Linux Server FOR Power Little Endian Update Services FOR SAP SolutionsRedhat — Enterprise Linux Server TUSSplunk — Universal Forwarder
CWE
- CWE-59
- CWE-59
Referencias
- https://access.redhat.com/security/cve/CVE-2021-31566
- https://bugzilla.redhat.com/show_bug.cgi?id=2024237
- https://github.com/libarchive/libarchive/commit/b41daecb5ccb4c8e3b2c53fd6147109fc12c3043
- https://github.com/libarchive/libarchive/issues/1566
- https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html
- https://access.redhat.com/security/cve/CVE-2021-31566
- https://bugzilla.redhat.com/show_bug.cgi?id=2024237
- https://github.com/libarchive/libarchive/commit/b41daecb5ccb4c8e3b2c53fd6147109fc12c3043
- https://github.com/libarchive/libarchive/issues/1566
- https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html
JSON original (NVD)
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