CVE-2021-35938

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 v3.0 6.7 MEDIUM

6.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1964114	Issue Tracking Vendor Advisory
https://github.com/rpm-software-management/rpm/pull/1919	Patch Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1157880	Exploit Issue Tracking Third Party Advisory
https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033	Patch Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-35938	Vendor Advisory
https://rpm.org/wiki/Releases/4.18.0	Release Notes
https://security.gentoo.org/glsa/202210-22	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*

Information

Published : 2022-08-25 13:15

Updated : 2022-11-29 10:06

NVD link : CVE-2021-35938

Mitre link : CVE-2021-35938

JSON object : View

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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Products Affected

redhat

enterprise_linux

fedoraproject

fedora

rpm

rpm

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