vulnerability

Red Hat: CVE-2021-35939: rpm: checks for unsafe symlinks are not performed for intermediary directories (Multiple Advisories)

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Severity
6
CVSS
(AV:L/AC:M/Au:M/C:C/I:C/A:C)
Published
Aug 26, 2022
Added
Jan 26, 2024
Modified
Sep 1, 2025

Description

It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Solutions

no-fix-redhat-rpm-packageredhat-upgrade-python3-rpmredhat-upgrade-python3-rpm-debuginforedhat-upgrade-rpmredhat-upgrade-rpm-apidocsredhat-upgrade-rpm-buildredhat-upgrade-rpm-build-debuginforedhat-upgrade-rpm-build-libsredhat-upgrade-rpm-build-libs-debuginforedhat-upgrade-rpm-cronredhat-upgrade-rpm-debuginforedhat-upgrade-rpm-debugsourceredhat-upgrade-rpm-develredhat-upgrade-rpm-devel-debuginforedhat-upgrade-rpm-libsredhat-upgrade-rpm-libs-debuginforedhat-upgrade-rpm-plugin-auditredhat-upgrade-rpm-plugin-audit-debuginforedhat-upgrade-rpm-plugin-fapolicydredhat-upgrade-rpm-plugin-fapolicyd-debuginforedhat-upgrade-rpm-plugin-imaredhat-upgrade-rpm-plugin-ima-debuginforedhat-upgrade-rpm-plugin-prioresetredhat-upgrade-rpm-plugin-prioreset-debuginforedhat-upgrade-rpm-plugin-selinuxredhat-upgrade-rpm-plugin-selinux-debuginforedhat-upgrade-rpm-plugin-syslogredhat-upgrade-rpm-plugin-syslog-debuginforedhat-upgrade-rpm-plugin-systemd-inhibitredhat-upgrade-rpm-plugin-systemd-inhibit-debuginforedhat-upgrade-rpm-signredhat-upgrade-rpm-sign-debuginforedhat-upgrade-rpm-sign-libsredhat-upgrade-rpm-sign-libs-debuginfo

References

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