`CVE-2019-17563` Apache Tomcat

Affected software	Apache Tomcat
Severity	7.5 High CVSS 3.1 2 scores
Fixed in	`7.0.99`, `8.5.50`, `9.0.30`
Weakness	CWE-384
Published	23 Dec 2019
Updated	8 Oct 2026

Description

When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack. The window was considered too narrow for an exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment exploitation: none
Indexed PoC none indexed
EPSS 11% chance in 30 days A model's forecast, not a report of exploitation. Higher than 96% of all scored CVEs.

Waratek protection

Protected by Waratek

Waratek has a rule that blocks attacks on this vulnerability.

Protection full
Action available security rule
Review human Researcher
Record active

Decided by	Manual classification of this CVE in the legacy dataset
Finding	A manual classification set this CVE's status to Protected by Waratek.

Decided by

Manual classification of this CVE in the legacy dataset

Finding

A manual classification set this CVE's status to Protected by Waratek.

How to mitigate CVE-2019-17563

Upgrade Apache Tomcat to a release that fixes it: 7.0.99, 8.5.50 or 9.0.30. Until you can, Waratek RASP blocks exploitation with a security rule that blocks this kind of attack. It runs inside the Java application, with no code changes.

Waratek RASP Runtime protection for Java applications

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

Version Score Band Vector Assigner Type

CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H NVD Primary published

CVSS 2.0 5.1 none AV:N/AC:H/Au:N/C:P/I:P/A:P NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	7.5	HIGH	`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`	NVD	Primary	published
CVSS 2.0	5.1	none	`AV:N/AC:H/Au:N/C:P/I:P/A:P`	NVD	Primary

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update January 2021 ↗	CPU	2021-Q1	Oracle Hyperion / Common Security (Apache Tomcat) (11.1.2.4) Oracle's note: This CVE is not exploitable in Hyperion Infrastructure Technology. The CVSS v3.1 Base Score for this CVE in the National Vulnerability Database (NVD) is 9.5. Tomcat is removed in Hyperion Infrastructure Technology with the January 2021 Critical Patch Update. Oracle Supply Chain / Install (Apache Tomcat) (6.2.1.0)
Oracle Critical Patch Update July 2020 ↗	CPU	2020-Q3	Oracle Supply Chain / Install (Apache Tomcat) (6.3.7)
Oracle Critical Patch Update April 2020 ↗	CPU	2020-Q2	Oracle Construction and Engineering / Generic (Apache Tomcat) (17.1 - 17.3) Oracle Database Server / WLM (Apache Tomcat) (12.2.0.1, 18c, 19c) Oracle MySQL / Service Manager (Apache Tomcat) (8.0.18.1217 and prior, 4.0.11.5331 and prior) Oracle Retail Applications / Segments (Apache Tomcat) (11.4) Oracle Retail Applications / System Administration (Apache Tomcat) (15.0)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update January 2021 ↗

CPU

2021-Q1

Oracle Hyperion / Common Security (Apache Tomcat) (11.1.2.4)
Oracle's note: This CVE is not exploitable in Hyperion Infrastructure Technology. The CVSS v3.1 Base Score for this CVE in the National Vulnerability Database (NVD) is 9.5. Tomcat is removed in Hyperion Infrastructure Technology with the January 2021 Critical Patch Update.
Oracle Supply Chain / Install (Apache Tomcat) (6.2.1.0)

Oracle Critical Patch Update July 2020 ↗

CPU

2020-Q3

Oracle Supply Chain / Install (Apache Tomcat) (6.3.7)

Oracle Critical Patch Update April 2020 ↗

CPU

2020-Q2

Oracle Construction and Engineering / Generic (Apache Tomcat) (17.1 - 17.3)
Oracle Database Server / WLM (Apache Tomcat) (12.2.0.1, 18c, 19c)
Oracle MySQL / Service Manager (Apache Tomcat) (8.0.18.1217 and prior, 4.0.11.5331 and prior)
Oracle Retail Applications / Segments (Apache Tomcat) (11.4)
Oracle Retail Applications / System Administration (Apache Tomcat) (15.0)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Construction and Engineering	Generic (Apache Tomcat)	17.1 - 17.3
Oracle Database Server	WLM (Apache Tomcat)	12.2.0.1, 18c, 19c	12.2.0.1 · 18 · 19
Oracle Hyperion	Common Security (Apache Tomcat)	11.1.2.4	11.1.2.4
Oracle MySQL	Service Manager (Apache Tomcat)	8.0.18.1217 and prior, 4.0.11.5331 and prior
Oracle Retail Applications	Segments (Apache Tomcat)	11.4	11.4
Oracle Retail Applications	System Administration (Apache Tomcat)	15.0	15.0
Oracle Supply Chain	Install (Apache Tomcat)	6.2.1.0	6.2.1.0 · 6.3.7

Family

Component

Versions, as Oracle lists them

Read as

Oracle Construction and Engineering

Generic (Apache Tomcat)

17.1 - 17.3

Oracle Database Server

WLM (Apache Tomcat)

12.2.0.1, 18c, 19c

12.2.0.1 · 18 · 19

Oracle Hyperion

Common Security (Apache Tomcat)

11.1.2.4

Oracle MySQL

Service Manager (Apache Tomcat)

8.0.18.1217 and prior, 4.0.11.5331 and prior

Oracle Retail Applications

Segments (Apache Tomcat)

11.4

Oracle Retail Applications

System Administration (Apache Tomcat)

15.0

Oracle Supply Chain

Install (Apache Tomcat)

6.2.1.0

6.2.1.0 · 6.3.7

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.apache.tomcat.embed:tomcat-embed-core 0 7.0.99 unbounded

org.apache.tomcat.embed:tomcat-embed-core 8.0.0 8.5.50 unbounded

org.apache.tomcat.embed:tomcat-embed-core 9.0.0 9.0.30 unbounded

Package	Introduced	Fixed	Last affected
`org.apache.tomcat.embed:tomcat-embed-core`	0	`7.0.99`	unbounded
`org.apache.tomcat.embed:tomcat-embed-core`	8.0.0	`8.5.50`	unbounded
`org.apache.tomcat.embed:tomcat-embed-core`	9.0.0	`9.0.30`	unbounded

Products and versions

12 products, 19 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	apache	tomcat	generic	≥ 7.0.0 and ≤ 7.0.98 · ≥ 8.5.0 and ≤ 8.5.49 · ≥ 9.0.0 and ≤ 9.0.29
nvd	canonical	ubuntu linux	generic	16.04
nvd	debian	debian linux	generic	8.0 · 9.0 · 10.0
nvd	opensuse	leap	generic	15.1
nvd	oracle	agile engineering data management	generic	6.2.1.0
nvd	oracle	hyperion infrastructure technology	generic	11.1.2.4
nvd	oracle	instantis enterprisetrack	generic	≥ 17.1 and ≤ 17.3
nvd	oracle	micros relate crm software	generic	11.4
nvd	oracle	mysql enterprise monitor	generic	≤ 4.0.11.5331 · ≥ 8.0.0 and ≤ 8.0.18.1217
nvd	oracle	retail order broker	generic	15.0
nvd	oracle	transportation management	generic	6.3.7
osv	org.apache.tomcat.embed	tomcat-embed-core	generic	＜ 7.0.99 · ≥ 8.0.0 and ＜ 8.5.50 · ≥ 9.0.0 and ＜ 9.0.30

Source

Vendor

Product

Scheme

Affected versions

nvd

apache

tomcat

generic

≥ 7.0.0 and ≤ 7.0.98 · ≥ 8.5.0 and ≤ 8.5.49 · ≥ 9.0.0 and ≤ 9.0.29

nvd

canonical

ubuntu linux

generic

16.04

nvd

debian

debian linux

generic

8.0 · 9.0 · 10.0

nvd

opensuse

leap

generic

15.1

nvd

oracle

agile engineering data management

generic

6.2.1.0

nvd

oracle

hyperion infrastructure technology

generic

11.1.2.4

nvd

oracle

instantis enterprisetrack

generic

≥ 17.1 and ≤ 17.3

nvd

oracle

micros relate crm software

generic

11.4

nvd

oracle

mysql enterprise monitor

generic

≤ 4.0.11.5331 · ≥ 8.0.0 and ≤ 8.0.18.1217

nvd

oracle

retail order broker

generic

15.0

nvd

oracle

transportation management

generic

6.3.7

osv

org.apache.tomcat.embed

tomcat-embed-core

generic

＜ 7.0.99 · ≥ 8.0.0 and ＜ 8.5.50 · ≥ 9.0.0 and ＜ 9.0.30

Earlier manual review

A reviewer classified this CVE in an older dataset. We kept the labels and products below, but not the reviewer's reasoning.

## Manual Classification Context **Labels:** HTTP, SERVICE MANAGER (APACHE TOMCAT), SYSTEM ADMINISTRATION (APACHE TOMCAT), HTTPS, COMMON SECURITY (APACHE TOMCAT), SEE NOTE 1, GENERIC (APACHE TOMCAT), NO AUTH REMOTE EXPLOIT, INSTALL (APACHE TOMCAT), SEGMENTS (APACHE TOMCAT) **Products:** HYPERION INFRASTRUCTURE TECHNOLOGY, ORACLE AGILE ENGINEERING DATA MANAGEMENT, MICROS RELATE CRM SOFTWARE, TOMCAT, MYSQL ENTERPRISE MONITOR, ORACLE MYSQL, INSTANTIS ENTERPRISETRACK, ORACLE RETAIL APPLICATIONS, ORACLE SUPPLY CHAIN, ORACLE DATABASE SERVER, WLM (APACHE TOMCAT), ORACLE RETAIL ORDER BROKER, ORACLE HYPERION, ORACLE CONSTRUCTION AND ENGINEERING, ORACLE TRANSPORTATION MANAGEMENT

References

URL	Tags
https://www.oracle.com/security-alerts/cpujul2020.html	WEB
https://www.oracle.com/security-alerts/cpujan2021.html	WEB
https://www.oracle.com/security-alerts/cpuapr2020.html	WEB
https://www.debian.org/security/2020/dsa-4680	WEB
https://www.debian.org/security/2019/dsa-4596	WEB
https://usn.ubuntu.com/4251-1	WEB
https://security.netapp.com/advisory/ntap-20200107-0001	WEB
https://security.gentoo.org/glsa/202003-43	WEB
https://seclists.org/bugtraq/2019/Dec/43	WEB
https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html	WEB

URL

Timeline

Published	2019-12-23	By the CVE Program.
NVD record modified	2026-10-08	NVD's own last-modified date for this record.

Published

2019-12-23

By the CVE Program.

NVD record modified

2026-10-08

NVD's own last-modified date for this record.

How VRT decided (5 of 24 rules ran)

5 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification no match A researcher's recorded decision for this specific CVE

5 manual classification decided it matched Protected by Waratek Found in legacy manual classifications

6 non-java-upstream not reached A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component not reached The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side not reached Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven not reached An OSV.dev record of this CVE affecting a package published to Maven Central. When every such package is one business applications do not use (Minecraft mods and launchers, Fastjson) and no tracked product is named by CPE, it settles the CVE as Outside Waratek scope instead

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint not reached A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven not reached The affected package being open source on Maven, so the fix can be read

19 poc-derivable not reached An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit not reached Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match not reached A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc not reached Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold not reached Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

24 no-exploit-published not reached Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

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