CVE-2021-30640

unknown

Published 2021-08-13 · Modified 2024-02-19

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CVSS v3

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

CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65.

Predictions

Exploit likelihood

30%

Patch ETA

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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.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`9.0.43-2`
sid	Fixed	`9.0.43-2`
forky	Fixed	`9.0.43-2`
bullseye	Fixed	`9.0.43-2~deb11u1`
bookworm	Fixed	`9.0.43-2`

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	org.apache.tomcat:tomcat	`>=10.0.0-M1,<10.0.5`	`10.0.5`
Maven	org.apache.tomcat:tomcat	`>=9.0.0M1,<9.0.45`	`9.0.45`
Maven	org.apache.tomcat:tomcat	`>=8.5.0,<8.5.65`	`8.5.65`

References

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

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