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Known exploited vulnerability

CVE-2021-3560

highCVSS 3.1 7.8In CISA KEVEPSS 22%Published · n/a

The short answer

CVE-2021-3560 affects n/a polkit and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2023-05-12: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Weakness: CWE-863, CWE-754.

Severity

7.8 high

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since May 12, 2023

Federal due date Jun 2, 2023

EPSS, next 30 days

22%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

polkit. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2021-3560 being exploited?

Yes. CISA added CVE-2021-3560 to its Known Exploited Vulnerabilities catalog on 2023-05-12, with a federal remediation due date of 2023-06-02.

How do I fix CVE-2021-3560?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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