VulnerabilityModified

CVE-2021-35939

The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

MEDIUM 6.7EPSS 0.51%

Does this matter?

Lower severity and a low EPSS score (0.51%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.51% probability · 42th percentile
CISA KEV: Not listed
Weakness: CWE-59
Affected: rpm/rpm · redhat/enterprise linux
Source: secalert@redhat.com

References

https://access.redhat.com/security/cve/CVE-2021-35939Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1964129Exploit, Issue Tracking, Third Party Advisory
https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556Patch, Third Party Advisory
https://github.com/rpm-software-management/rpm/pull/1919Patch, Third Party Advisory
https://rpm.org/wiki/Releases/4.18.0Release Notes, Vendor Advisory
https://security.gentoo.org/glsa/202210-22Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-35939Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1964129Exploit, Issue Tracking, Third Party Advisory
https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556Patch, Third Party Advisory
https://github.com/rpm-software-management/rpm/pull/1919Patch, Third Party Advisory
https://rpm.org/wiki/Releases/4.18.0Release Notes, Vendor Advisory
https://security.gentoo.org/glsa/202210-22Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.