tomcat: HTTP/2 connection window exhaustion on write, incomplete fix of CVE-2019-0199
Published Jun 21, 2019
7.5
HIGHCVSS 3.0
EPSS 72.99%
Description
The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
Affected products
- Vendor n/a Product Apache Tomcat Defaultn/a
- Version Apache Tomcat 9.0.0.M1 to 9.0.19, 8.5.0 to 8.5.40StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Apache Tomcat | n/a |
|
- ≥ 8.5.0 · ≤ 8.5.40
- ≥ 9.0.1 · ≤ 9.0.19
- 9.0.0
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- 9.0.0
No data.
Red Hat JBoss Web Server 5
tomcat
Fixed · RHSA-2019:3931
Red Hat JBoss Web Server 5.2 on RHEL 6
jws5-ecj-0:4.12.0-1.redhat_1.1.el6jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 6
jws5-javapackages-tools-0:3.4.1-5.15.11.el6jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 6
jws5-jboss-logging-0:3.3.2-1.Final_redhat_00001.1.el6jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 6
jws5-mod_cluster-0:1.4.1-1.Final_redhat_00001.2.el6jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 6
jws5-tomcat-0:9.0.21-10.redhat_4.1.el6jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 6
jws5-tomcat-native-0:1.2.21-34.redhat_34.el6jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 6
jws5-tomcat-vault-0:1.1.8-1.Final_redhat_1.1.el6jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 7
jws5-ecj-0:4.12.0-1.redhat_1.1.el7jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 7
jws5-javapackages-tools-0:3.4.1-5.15.11.el7jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 7
jws5-jboss-logging-0:3.3.2-1.Final_redhat_00001.1.el7jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 7
jws5-mod_cluster-0:1.4.1-1.Final_redhat_00001.2.el7jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 7
jws5-tomcat-0:9.0.21-10.redhat_4.1.el7jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 7
jws5-tomcat-native-0:1.2.21-34.redhat_34.el7jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 7
jws5-tomcat-vault-0:1.1.8-1.Final_redhat_1.1.el7jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 8
jws5-ecj-0:4.12.0-1.redhat_1.1.el8jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 8
jws5-javapackages-tools-0:3.4.1-5.15.11.el8jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 8
jws5-jboss-logging-0:3.3.2-1.Final_redhat_00001.1.el8jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 8
jws5-mod_cluster-0:1.4.1-1.Final_redhat_00001.2.el8jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 8
jws5-tomcat-0:9.0.21-10.redhat_4.1.el8jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 8
jws5-tomcat-native-0:1.2.21-34.redhat_34.el8jws
Fixed · RHSA-2019:3929
Red Hat JBoss Web Server 5.2 on RHEL 8
jws5-tomcat-vault-0:1.1.8-1.Final_redhat_1.1.el8jws
Fixed · RHSA-2019:3929
Red Hat BPM Suite 6
tomcat
Out of support scope
Red Hat Enterprise Linux 6
tomcat
Not affected
Red Hat Enterprise Linux 7
tomcat
Not affected
Red Hat Enterprise Linux 8
pki-deps:10.6/pki-servlet-container
Will not fix
Red Hat Fuse 7
tomcat
Not affected
Red Hat JBoss BRMS 6
tomcat
Out of support scope
Red Hat JBoss Data Grid 7
tomcat
Not affected
Red Hat JBoss Fuse 6
tomcat
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat JBoss Web Server 5 | tomcat | Fixed | RHSA-2019:3931 |
| Red Hat JBoss Web Server 5.2 on RHEL 6 | jws5-ecj-0:4.12.0-1.redhat_1.1.el6jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 6 | jws5-javapackages-tools-0:3.4.1-5.15.11.el6jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 6 | jws5-jboss-logging-0:3.3.2-1.Final_redhat_00001.1.el6jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 6 | jws5-mod_cluster-0:1.4.1-1.Final_redhat_00001.2.el6jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 6 | jws5-tomcat-0:9.0.21-10.redhat_4.1.el6jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 6 | jws5-tomcat-native-0:1.2.21-34.redhat_34.el6jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 6 | jws5-tomcat-vault-0:1.1.8-1.Final_redhat_1.1.el6jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 7 | jws5-ecj-0:4.12.0-1.redhat_1.1.el7jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 7 | jws5-javapackages-tools-0:3.4.1-5.15.11.el7jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 7 | jws5-jboss-logging-0:3.3.2-1.Final_redhat_00001.1.el7jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 7 | jws5-mod_cluster-0:1.4.1-1.Final_redhat_00001.2.el7jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 7 | jws5-tomcat-0:9.0.21-10.redhat_4.1.el7jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 7 | jws5-tomcat-native-0:1.2.21-34.redhat_34.el7jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 7 | jws5-tomcat-vault-0:1.1.8-1.Final_redhat_1.1.el7jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 8 | jws5-ecj-0:4.12.0-1.redhat_1.1.el8jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 8 | jws5-javapackages-tools-0:3.4.1-5.15.11.el8jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 8 | jws5-jboss-logging-0:3.3.2-1.Final_redhat_00001.1.el8jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 8 | jws5-mod_cluster-0:1.4.1-1.Final_redhat_00001.2.el8jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 8 | jws5-tomcat-0:9.0.21-10.redhat_4.1.el8jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 8 | jws5-tomcat-native-0:1.2.21-34.redhat_34.el8jws | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 on RHEL 8 | jws5-tomcat-vault-0:1.1.8-1.Final_redhat_1.1.el8jws | Fixed | RHSA-2019:3929 |
| Red Hat BPM Suite 6 | tomcat | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | tomcat | Not affected | n/a |
| Red Hat Enterprise Linux 7 | tomcat | Not affected | n/a |
| Red Hat Enterprise Linux 8 | pki-deps:10.6/pki-servlet-container | Will not fix | n/a |
| Red Hat Fuse 7 | tomcat | Not affected | n/a |
| Red Hat JBoss BRMS 6 | tomcat | Out of support scope | n/a |
| Red Hat JBoss Data Grid 7 | tomcat | Not affected | n/a |
| Red Hat JBoss Fuse 6 | tomcat | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
pki-servlet-container does not use HTTP/2 in its default configuration.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (58 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 72.99% (0.72988) | 99.44th | v5 (v2026.06.15) |
| Sep 22, 2026 | 72.99% (0.72988) | 99.43th | v5 (v2026.06.15) |
| Sep 21, 2026 | 69.55% (0.69546) | 99.35th | v5 (v2026.06.15) |
| Sep 6, 2026 | 72.99% (0.72988) | 99.41th | v5 (v2026.06.15) |
| Sep 5, 2026 | 69.55% (0.69546) | 99.33th | v5 (v2026.06.15) |
| Aug 30, 2026 | 72.99% (0.72988) | 99.41th | v5 (v2026.06.15) |
| Aug 28, 2026 | 69.55% (0.69546) | 99.33th | v5 (v2026.06.15) |
| Aug 24, 2026 | 72.99% (0.72988) | 99.41th | v5 (v2026.06.15) |
| Aug 23, 2026 | 69.55% (0.69546) | 99.33th | v5 (v2026.06.15) |
| Jun 15, 2026 | 72.99% (0.72988) | 99.38th | v5 (v2026.06.15) |
| Mar 4, 2026 | 72.14% (0.72141) | 98.72th | v4 (v2025.03.14) |
| Mar 1, 2026 | 33.40% (0.33395) | 96.85th | v4 (v2025.03.14) |
| Feb 4, 2026 | 72.14% (0.72141) | 98.71th | v4 (v2025.03.14) |
| Feb 1, 2026 | 33.40% (0.33395) | 96.82th | v4 (v2025.03.14) |
| Jan 4, 2026 | 71.58% (0.71585) | 98.67th | v4 (v2025.03.14) |
| Jan 1, 2026 | 32.63% (0.32625) | 96.74th | v4 (v2025.03.14) |
| Dec 4, 2025 | 71.58% (0.71585) | 98.66th | v4 (v2025.03.14) |
| Dec 1, 2025 | 32.63% (0.32625) | 96.71th | v4 (v2025.03.14) |
| Nov 21, 2025 | 71.58% (0.71585) | 98.66th | v4 (v2025.03.14) |
| Nov 18, 2025 | 66.25% (0.66248) | 98.53th | v4 (v2025.03.14) |
| Nov 4, 2025 | 75.72% (0.75719) | 98.85th | v4 (v2025.03.14) |
| Nov 1, 2025 | 38.93% (0.38933) | 97.11th | v4 (v2025.03.14) |
| Oct 4, 2025 | 75.72% (0.75719) | 98.86th | v4 (v2025.03.14) |
| Oct 1, 2025 | 38.93% (0.38933) | 97.17th | v4 (v2025.03.14) |
| Sep 4, 2025 | 75.72% (0.75719) | 98.87th | v4 (v2025.03.14) |
| Sep 1, 2025 | 38.93% (0.38933) | 97.19th | v4 (v2025.03.14) |
| Aug 19, 2025 | 75.72% (0.75719) | 98.86th | v4 (v2025.03.14) |
| Aug 4, 2025 | 71.53% (0.71534) | 98.66th | v4 (v2025.03.14) |
| Aug 1, 2025 | 29.23% (0.29227) | 96.44th | v4 (v2025.03.14) |
| Jul 4, 2025 | 71.53% (0.71534) | 98.64th | v4 (v2025.03.14) |
| Jul 1, 2025 | 29.23% (0.29227) | 96.38th | v4 (v2025.03.14) |
| Jun 4, 2025 | 71.53% (0.71534) | 98.63th | v4 (v2025.03.14) |
| Jun 1, 2025 | 29.23% (0.29227) | 96.34th | v4 (v2025.03.14) |
| May 4, 2025 | 71.53% (0.71534) | 98.62th | v4 (v2025.03.14) |
| May 1, 2025 | 29.23% (0.29227) | 96.31th | v4 (v2025.03.14) |
| Apr 12, 2025 | 71.53% (0.71534) | 98.64th | v4 (v2025.03.14) |
| Mar 30, 2025 | 68.84% (0.68838) | 98.52th | v4 (v2025.03.14) |
| Mar 29, 2025 | 69.88% (0.69882) | 98.18th | v4 (v2025.03.14) |
| Mar 17, 2025 | 68.84% (0.68838) | 98.52th | v4 (v2025.03.14) |
| Dec 12, 2024 | 16.98% (0.16980) | 96.26th | v3 (v2023.03.01) |
| Jun 14, 2024 | 16.98% (0.16980) | 96.09th | v3 (v2023.03.01) |
| Apr 26, 2024 | 17.82% (0.17819) | 96.09th | v3 (v2023.03.01) |
| Nov 8, 2023 | 16.05% (0.16050) | 95.41th | v3 (v2023.03.01) |
| Jun 28, 2023 | 46.80% (0.46804) | 96.92th | v3 (v2023.03.01) |
| Jun 14, 2023 | 39.09% (0.39087) | 96.70th | v3 (v2023.03.01) |
| May 28, 2023 | 31.75% (0.31745) | 96.36th | v3 (v2023.03.01) |
| May 12, 2023 | 29.13% (0.29126) | 96.24th | v3 (v2023.03.01) |
| Apr 25, 2023 | 29.92% (0.29916) | 96.27th | v3 (v2023.03.01) |
| Apr 10, 2023 | 24.03% (0.24027) | 95.85th | v3 (v2023.03.01) |
| Mar 7, 2023 | 28.21% (0.28206) | 96.09th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.24% (0.05242) | 89.75th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.24% (0.05242) | 88.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 34.28% (0.34284) | 96.67th | v2 (v2022.01.01) |
| Feb 3, 2022 | 37.58% (0.37582) | 98.11th | v1 |
| Jan 6, 2022 | 37.58% (0.37582) | 98.08th | v1 |
| Sep 1, 2021 | 11.83% (0.11832) | 95.67th | v1 |
| Jun 15, 2021 | 11.83% (0.11832) | 0.00th | v1 |
| Apr 14, 2021 | 11.33% (0.11329) | 0.00th | v1 |
References (39)
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00013.html vendor-advisoryx_refsource_SUSE
- http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.41
- http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.20
- http://www.securityfocus.com/bid/108874 vdb-entryx_refsource_BID
- https://access.redhat.com/errata/RHSA-2019:3929 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:3931 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2019-10072 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1723708 Issue Tracking
- https://github.com/advisories/GHSA-q4hg-rmq2-52q9 Advisory
- https://github.com/apache/tomcat/commit/0bcd69c9dd8ae0ff424f2cd46de51583510b7f35
- https://github.com/apache/tomcat/commit/7f748eb6bfaba5207c89dbd7d5adf50fae847145
- https://github.com/apache/tomcat/commit/8d14c6f21d29768a39be4b6b9517060dc6606758
- https://github.com/apache/tomcat/commit/ada725a50a60867af3422c8e612aecaeea856a9a
- https://lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a%40%3Cannounce.tomcat.apache.org%3E x_refsource_MISC
- https://lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a@%3Cannounce.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a@%3Cdev.tomcat.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2019-10072
- https://security.netapp.com/advisory/ntap-20190625-0002 x_refsource_CONFIRM
- https://support.f5.com/csp/article/K17321505 x_refsource_CONFIRM
- https://tomcat.apache.org/security-8.html
- https://tomcat.apache.org/security-9.html
- https://usn.ubuntu.com/4128-1 vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4128-2 vendor-advisoryx_refsource_UBUNTU
- https://web.archive.org/web/20200227033743/http://www.securityfocus.com/bid/108874
- https://www.cve.org/CVERecord?id=CVE-2019-10072
- https://www.debian.org/security/2020/dsa-4680 vendor-advisoryx_refsource_DEBIAN
- https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC
- https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISC
- https://www.oracle.com/security-alerts/cpujan2020.html x_refsource_MISC
- https://www.oracle.com/security-alerts/cpuoct2020.html x_refsource_MISC
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html x_refsource_MISC
- https://www.synology.com/security/advisory/Synology_SA_19_29 x_refsource_CONFIRM
Change history (0)
No recorded changes yet.