Vulnerability identifier: #VU79522

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-35937

CWE-ID: CWE-367

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
rpm
/

Vendor:

Description

The vulnerability allows a local privileged user to escalate privileges on the system.

The vulnerability exist due to race condition. A local privileged user can bypass the checks that were introduced in response to CVE-2017-7500 and CVE-2017-7501, potentially gaining root privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=1964125
http://www.usenix.org/legacy/event/sec05/tech/full_papers/borisov/borisov.pdf
http://access.redhat.com/security/cve/CVE-2021-35937
http://rpm.org/wiki/Releases/4.18.0
http://security.gentoo.org/glsa/202210-22

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.