CVE-2021-35938
A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system.
Does this matter?
Lower severity and a low EPSS score (0.52%). Track it; it rarely justifies an emergency change on its own.
Description
A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. 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
- 0.52% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-59
- Affected
- rpm/rpm · fedoraproject/fedora · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2021-35938Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1964114Issue Tracking, Vendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1157880Exploit, Issue Tracking, Third Party Advisory
- https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033Patch, Third Party Advisory
- https://github.com/rpm-software-management/rpm/pull/1919Patch, Third Party Advisory
- https://rpm.org/wiki/Releases/4.18.0Release Notes
- https://security.gentoo.org/glsa/202210-22Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2021-35938Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1964114Issue Tracking, Vendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1157880Exploit, Issue Tracking, Third Party Advisory
- https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033Patch, Third Party Advisory
- https://github.com/rpm-software-management/rpm/pull/1919Patch, Third Party Advisory
- https://rpm.org/wiki/Releases/4.18.0Release Notes
- https://security.gentoo.org/glsa/202210-22Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.