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cpio: improper input validation when writing tar header fields leads to unexpected tar generation

🗓️ 18 May 2021 13:30:29Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

cpio improperly validates input when creating TAR archives, risking permissions and paths.

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Refs
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IBM Security Bulletins		Security Bulletin: IBM Security Guardium is affected by multiple vulnerabilities
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IBM Security Bulletins		Security Bulletin: IBM Bootable Media Creator (BoMC) is affected by a vulnerability in GNU cpio (CVE-2019-14866)
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Tenable Nessus		Amazon Linux 2 : cpio (ALAS-2020-1505)
27 Oct 202000:00
–nessus
Tenable Nessus		AlmaLinux 8 : cpio (ALSA-2021:1582)
9 Feb 202200:00
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Tenable Nessus		CentOS 8 : cpio (CESA-2021:1582)
19 May 202100:00
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Tenable Nessus		CentOS 7 : cpio (RHSA-2020:3908)
20 Oct 202000:00
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Tenable Nessus		Debian DLA-1981-1 : cpio security update
6 Nov 201900:00
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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64cpio2.12-10.el8cpio-2.12-10.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lecpio2.12-10.el8cpio-2.12-10.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xcpio2.12-10.el8cpio-2.12-10.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64cpio2.12-10.el8cpio-2.12-10.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64cpio-debuginfo2.12-10.el8cpio-debuginfo-2.12-10.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lecpio-debuginfo2.12-10.el8cpio-debuginfo-2.12-10.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xcpio-debuginfo2.12-10.el8cpio-debuginfo-2.12-10.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64cpio-debuginfo2.12-10.el8cpio-debuginfo-2.12-10.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64cpio-debugsource2.12-10.el8cpio-debugsource-2.12-10.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lecpio-debugsource2.12-10.el8cpio-debugsource-2.12-10.el8.ppc64le.rpm
Rows per page

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21 Nov 2025 18:22Current
7.2High risk
Vulners AI Score7.2
CVSS 26.9
CVSS 3.17.3
CVSS 36.7
EPSS0.00686
CWE-20
cpiotar archivesinput validationfile permissionsrestricted pathsprivilege escalation
3