CVE-2020-1938

medium KEV

Published 2020-06-15 · Modified 2022-03-03

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CVSS v3

—

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.0

Description

Apache Tomcat treats Apache JServ Protocol (AJP) connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited.

CISA KEV

Vendor: Apache
Product: Tomcat
Due date: 2022-03-17

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-49039 webapps multiple verified

SunCSR · 2020-11-13

Apache Tomcat - AJP 'Ghostcat' File Read/Inclusion (Metasploit)

Source code queued for fetch — refresh in a moment.

EDB-48143 webapps multiple

YDHCUI · 2020-02-20

Apache Tomcat - AJP 'Ghostcat File Read/Inclusion

Source code queued for fetch — refresh in a moment.

Metasploit modules

auxiliary_admin/http/tomcat_ghostcat rank 300

Apache Tomcat AJP File Read

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

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`9.0.31-1`
sid	Fixed	`9.0.31-1`
forky	Fixed	`9.0.31-1`
bullseye	Fixed	`9.0.31-1`
bookworm	Fixed	`9.0.31-1`

Red Hat Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

Rocky Linux Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=9.0.0,<9.0.31`	`9.0.31`
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=8.0.0,<8.5.51`	`8.5.51`
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=7.0.0,<7.0.100`	`7.0.100`

References

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

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