CVE-2021-3560

high KEV

Published 2023-05-12 · Modified 2023-05-12

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CVSS v3

—

CVSS v4 NEW

—

not yet in upstream

VIR risk

10.0

Description

Red Hat Polkit contains an incorrect authorization vulnerability through the bypassing of credential checks for D-Bus requests, allowing for privilege escalation.

CISA KEV

Vendor: Red Hat
Product: Polkit
Due date: 2023-06-02

Predictions

Exploit likelihood

99%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-50011 local linux verified

J Smith · 2021-06-15

Polkit 0.105-26 0.117-2 - Local Privilege Escalation

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_linux/local/polkit_dbus_auth_bypass rank 600

Polkit D-Bus Authentication Bypass

Source fetch failed: fetch_error — view the original via the link above.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Arch Fixed 1 release

Version	Status	Fixed in
—	Fixed	`0.119-1`

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`0.105-31`
sid	Fixed	`0.105-31`
forky	Fixed	`0.105-31`
bullseye	Fixed	`0.105-31`
bookworm	Fixed	`0.105-31`

Red Hat Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

Rocky Linux Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.