CVE-2021-35939

EUVD-2021-22574
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.
Link Following
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.7 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 42%
Affected Products (NVD)
VendorProductVersion
rpmrpm
𝑥
< 4.18
redhatenterprise_linux
8.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
rpm
bookworm
4.18.0+dfsg-1+deb12u1
fixed
bullseye
ignored
buster
ignored
sid
4.20.0+dfsg-3
fixed
stretch
no-dsa
trixie
4.20.0+dfsg-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
rpm
bionic
needs-triage
focal
needs-triage
groovy
ignored
hirsute
ignored
impish
ignored
jammy
needs-triage
kinetic
ignored
lunar
ignored
mantic
ignored
noble
needs-triage
trusty
needs-triage
xenial
needs-triage
Common Weakness Enumeration
References
https://access.redhat.com/security/cve/CVE-2021-35939
https://bugzilla.redhat.com/show_bug.cgi?id=1964129
https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556
https://github.com/rpm-software-management/rpm/pull/1919
https://rpm.org/wiki/Releases/4.18.0
https://security.gentoo.org/glsa/202210-22
https://access.redhat.com/security/cve/CVE-2021-35939
https://bugzilla.redhat.com/show_bug.cgi?id=1964129
https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556
https://github.com/rpm-software-management/rpm/pull/1919
https://rpm.org/wiki/Releases/4.18.0
https://security.gentoo.org/glsa/202210-22