tomcat: Session fixation when using FORM authentication
Published Dec 23, 2019
7.5
HIGHCVSS 3.1
EPSS 10.69%
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.
Affected products
-
- Version 7.0.0 to 7.0.98StatusaffectedConstraints-
- Version 8.5.0 to 8.5.49StatusaffectedConstraints-
- Version 9.0.0.M1 to 9.0.29StatusaffectedConstraints-
- 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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | n/a |
|
Configuration 1
Configuration 2
- 8.0
- 9.0
- 10.0
Configuration 4
- 16.04
Configuration 5
- 6.2.1.0
- 11.1.2.4
- ≥ 17.1 · ≤ 17.3
- 11.4
- ≤ 4.0.11.5331
- ≥ 8.0.0 · ≤ 8.0.18.1217
- 15.0
- 6.3.7
No data.
Red Hat Enterprise Linux 7
tomcat-0:7.0.76-15.el7
Fixed · RHSA-2020:4004
Red Hat Enterprise Linux 7.6 Extended Update Support
tomcat-0:7.0.76-11.el7_6
Fixed · RHSA-2021:0882
Red Hat Enterprise Linux 7.7 Extended Update Support
tomcat-0:7.0.76-12.el7_7
Fixed · RHSA-2021:1030
Red Hat JBoss Web Server (JWS) 5.3
tomcat
Fixed · RHSA-2020:1521
Red Hat JBoss Web Server 3 for RHEL 6
tomcat-native-0:1.2.23-21.redhat_21.ep7.el6
Fixed · RHSA-2020:0861
Red Hat JBoss Web Server 3 for RHEL 6
tomcat7-0:7.0.70-38.ep7.el6
Fixed · RHSA-2020:0861
Red Hat JBoss Web Server 3 for RHEL 6
tomcat8-0:8.0.36-42.ep7.el6
Fixed · RHSA-2020:0861
Red Hat JBoss Web Server 3 for RHEL 7
tomcat-native-0:1.2.23-21.redhat_21.ep7.el7
Fixed · RHSA-2020:0861
Red Hat JBoss Web Server 3 for RHEL 7
tomcat7-0:7.0.70-38.ep7.el7
Fixed · RHSA-2020:0861
Red Hat JBoss Web Server 3 for RHEL 7
tomcat8-0:8.0.36-42.ep7.el7
Fixed · RHSA-2020:0861
Red Hat JBoss Web Server 3.1
tomcat
Fixed · RHSA-2020:0860
Red Hat JBoss Web Server 5.3 on RHEL 6
jws5-tomcat-0:9.0.30-3.redhat_4.1.el6jws
Fixed · RHSA-2020:1520
Red Hat JBoss Web Server 5.3 on RHEL 6
jws5-tomcat-native-0:1.2.23-4.redhat_4.el6jws
Fixed · RHSA-2020:1520
Red Hat JBoss Web Server 5.3 on RHEL 7
jws5-tomcat-0:9.0.30-3.redhat_4.1.el7jws
Fixed · RHSA-2020:1520
Red Hat JBoss Web Server 5.3 on RHEL 7
jws5-tomcat-native-0:1.2.23-4.redhat_4.el7jws
Fixed · RHSA-2020:1520
Red Hat JBoss Web Server 5.3 on RHEL 8
jws5-tomcat-0:9.0.30-3.redhat_4.1.el8jws
Fixed · RHSA-2020:1520
Red Hat JBoss Web Server 5.3 on RHEL 8
jws5-tomcat-native-0:1.2.23-4.redhat_4.el8jws
Fixed · RHSA-2020:1520
Red Hat BPM Suite 6
tomcat
Out of support scope
Red Hat Enterprise Linux 5
tomcat5
Out of support scope
Red Hat Enterprise Linux 6
tomcat6
Out of support scope
Red Hat Enterprise Linux 8
pki-deps:10.6/pki-servlet-engine
Fix deferred
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
Red Hat Software Collections
rh-java-common-tomcat
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | tomcat-0:7.0.76-15.el7 | Fixed | RHSA-2020:4004 |
| Red Hat Enterprise Linux 7.6 Extended Update Support | tomcat-0:7.0.76-11.el7_6 | Fixed | RHSA-2021:0882 |
| Red Hat Enterprise Linux 7.7 Extended Update Support | tomcat-0:7.0.76-12.el7_7 | Fixed | RHSA-2021:1030 |
| Red Hat JBoss Web Server (JWS) 5.3 | tomcat | Fixed | RHSA-2020:1521 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat-native-0:1.2.23-21.redhat_21.ep7.el6 | Fixed | RHSA-2020:0861 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat7-0:7.0.70-38.ep7.el6 | Fixed | RHSA-2020:0861 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat8-0:8.0.36-42.ep7.el6 | Fixed | RHSA-2020:0861 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat-native-0:1.2.23-21.redhat_21.ep7.el7 | Fixed | RHSA-2020:0861 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat7-0:7.0.70-38.ep7.el7 | Fixed | RHSA-2020:0861 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat8-0:8.0.36-42.ep7.el7 | Fixed | RHSA-2020:0861 |
| Red Hat JBoss Web Server 3.1 | tomcat | Fixed | RHSA-2020:0860 |
| Red Hat JBoss Web Server 5.3 on RHEL 6 | jws5-tomcat-0:9.0.30-3.redhat_4.1.el6jws | Fixed | RHSA-2020:1520 |
| Red Hat JBoss Web Server 5.3 on RHEL 6 | jws5-tomcat-native-0:1.2.23-4.redhat_4.el6jws | Fixed | RHSA-2020:1520 |
| Red Hat JBoss Web Server 5.3 on RHEL 7 | jws5-tomcat-0:9.0.30-3.redhat_4.1.el7jws | Fixed | RHSA-2020:1520 |
| Red Hat JBoss Web Server 5.3 on RHEL 7 | jws5-tomcat-native-0:1.2.23-4.redhat_4.el7jws | Fixed | RHSA-2020:1520 |
| Red Hat JBoss Web Server 5.3 on RHEL 8 | jws5-tomcat-0:9.0.30-3.redhat_4.1.el8jws | Fixed | RHSA-2020:1520 |
| Red Hat JBoss Web Server 5.3 on RHEL 8 | jws5-tomcat-native-0:1.2.23-4.redhat_4.el8jws | Fixed | RHSA-2020:1520 |
| Red Hat BPM Suite 6 | tomcat | Out of support scope | n/a |
| Red Hat Enterprise Linux 5 | tomcat5 | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | tomcat6 | Out of support scope | n/a |
| Red Hat Enterprise Linux 8 | pki-deps:10.6/pki-servlet-engine | Fix deferred | 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 |
| Red Hat Software Collections | rh-java-common-tomcat | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
All affected Red Hat products providing the affected component code should update their setups per the product fixes given. The following Red Hat products are out of support scope for Low Impact flaws, and as such will not issue security fixes: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Red Hat JBoss BPM Suite 6 Red Hat JBoss BRMS 6
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:H/Au:N/C:P/I:P/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 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (54 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.69% (0.10687) | 95.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.69% (0.10687) | 95.23th | v5 (v2026.06.15) |
| May 29, 2026 | 4.36% (0.04359) | 89.12th | v4 (v2025.03.14) |
| May 26, 2026 | 3.26% (0.03260) | 87.31th | v4 (v2025.03.14) |
| May 24, 2026 | 4.36% (0.04359) | 89.07th | v4 (v2025.03.14) |
| May 22, 2026 | 3.26% (0.03260) | 87.30th | v4 (v2025.03.14) |
| May 13, 2026 | 4.36% (0.04359) | 89.04th | v4 (v2025.03.14) |
| Mar 4, 2026 | 2.43% (0.02427) | 84.88th | v4 (v2025.03.14) |
| Mar 1, 2026 | 0.64% (0.00638) | 70.25th | v4 (v2025.03.14) |
| Feb 4, 2026 | 2.43% (0.02427) | 84.78th | v4 (v2025.03.14) |
| Feb 1, 2026 | 0.64% (0.00638) | 70.13th | v4 (v2025.03.14) |
| Jan 4, 2026 | 2.43% (0.02427) | 84.71th | v4 (v2025.03.14) |
| Jan 1, 2026 | 0.64% (0.00638) | 70.06th | v4 (v2025.03.14) |
| Dec 4, 2025 | 2.43% (0.02427) | 84.63th | v4 (v2025.03.14) |
| Dec 1, 2025 | 0.64% (0.00638) | 69.82th | v4 (v2025.03.14) |
| Nov 21, 2025 | 2.43% (0.02427) | 84.62th | v4 (v2025.03.14) |
| Nov 18, 2025 | 17.25% (0.17247) | 94.51th | v4 (v2025.03.14) |
| Nov 4, 2025 | 3.26% (0.03260) | 86.63th | v4 (v2025.03.14) |
| Nov 1, 2025 | 0.87% (0.00866) | 74.53th | v4 (v2025.03.14) |
| Oct 28, 2025 | 3.26% (0.03260) | 86.62th | v4 (v2025.03.14) |
| Oct 27, 2025 | 4.36% (0.04359) | 88.46th | v4 (v2025.03.14) |
| Oct 4, 2025 | 3.26% (0.03260) | 86.65th | v4 (v2025.03.14) |
| Oct 1, 2025 | 0.86% (0.00865) | 74.44th | v4 (v2025.03.14) |
| Sep 24, 2025 | 4.36% (0.04359) | 88.50th | v4 (v2025.03.14) |
| Sep 4, 2025 | 5.80% (0.05804) | 90.19th | v4 (v2025.03.14) |
| Sep 1, 2025 | 0.86% (0.00865) | 74.34th | v4 (v2025.03.14) |
| Aug 4, 2025 | 5.80% (0.05804) | 90.16th | v4 (v2025.03.14) |
| Aug 1, 2025 | 0.86% (0.00865) | 74.31th | v4 (v2025.03.14) |
| Jul 27, 2025 | 5.80% (0.05804) | 90.11th | v4 (v2025.03.14) |
| Jul 12, 2025 | 4.36% (0.04359) | 88.45th | v4 (v2025.03.14) |
| Jul 4, 2025 | 3.26% (0.03258) | 86.62th | v4 (v2025.03.14) |
| Jul 1, 2025 | 0.64% (0.00638) | 69.65th | v4 (v2025.03.14) |
| Jun 4, 2025 | 3.26% (0.03258) | 86.53th | v4 (v2025.03.14) |
| Jun 1, 2025 | 0.64% (0.00638) | 69.49th | v4 (v2025.03.14) |
| May 4, 2025 | 3.26% (0.03258) | 86.44th | v4 (v2025.03.14) |
| May 1, 2025 | 0.64% (0.00638) | 69.37th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.31% (0.03313) | 86.10th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.80% (0.07801) | 86.34th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.40% (0.03402) | 86.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.33% (0.00327) | 71.71th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.45% (0.00446) | 75.12th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.39% (0.00385) | 72.39th | v3 (v2023.03.01) |
| Nov 29, 2023 | 0.39% (0.00385) | 70.15th | v3 (v2023.03.01) |
| Nov 13, 2023 | 0.34% (0.00337) | 68.11th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.35% (0.00351) | 68.71th | v3 (v2023.03.01) |
| Oct 27, 2023 | 0.36% (0.00357) | 68.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.35% (0.00349) | 67.28th | 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 | 27.23% (0.27233) | 95.84th | v2 (v2022.01.01) |
| Feb 3, 2022 | 36.44% (0.36436) | 98.05th | v1 |
| Jan 6, 2022 | 36.44% (0.36436) | 98.03th | v1 |
| Jan 5, 2022 | 11.33% (0.11329) | 95.65th | v5 (v2026.06.15) |
| Apr 14, 2021 | 11.33% (0.11329) | 0.00th | v1 |
References (34)
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Change history (0)
No recorded changes yet.