Session fixation in Apache HTTP Server
Priority MEDIUM 51CWE-384Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-384.
Summary
In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded.
Why it matters now
EPSS 0.19994 97th percentileScored 2026-11-07
Fix Fixed Red Hat: 6 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache HTTP Server | Apache HTTP Server 2.4.0 to 2.4.37 | — | No fix listed | CNA |
- Apache HTTP Server VendorApache Affected Apache HTTP Server 2.4.0 to 2.4.37 Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* | 2.4.0 – 2.4.37 | Vulnerable | Apache |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:a:netapp:santricity_cloud_connector:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | 18.10 | Vulnerable | Canonical |
| cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:* | 12.3.3 | Vulnerable | Oracle |
- cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* Versions 2.4.0 – 2.4.37 Vulnerable ·Apache
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:a:netapp:santricity_cloud_connector:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
- cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:* Versions 12.3.3 Vulnerable ·Oracle
Remediation
Red Hat 6 advisories
- RHSA-2021:1809 Released 2021-05-18 · Red Hat rating Moderatehttpd:2.4 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) httpd-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64::httpd:2.4, httpd-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le::httpd:2.4, httpd-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x::httpd:2.4 +38
- RHSA-2020:1121 Released 2020-03-31 · Red Hat rating Moderatehttpd security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client Optional (v. 7) httpd-2.4.6-93.el7, httpd-devel-2.4.6-93.el7, httpd-manual-2.4.6-93.el7 +5
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) httpd-2.4.6-93.el7, httpd-devel-2.4.6-93.el7, httpd-manual-2.4.6-93.el7 +5
- Red Hat Enterprise Linux Server (v. 7) httpd-2.4.6-93.el7, httpd-devel-2.4.6-93.el7, httpd-manual-2.4.6-93.el7 +3
- Red Hat Enterprise Linux Server Optional (v. 7) mod_ldap-2.4.6-93.el7, mod_proxy_html-1:2.4.6-93.el7
- Red Hat Enterprise Linux Workstation (v. 7) httpd-2.4.6-93.el7, httpd-devel-2.4.6-93.el7, httpd-manual-2.4.6-93.el7 +3
- Red Hat Enterprise Linux Workstation Optional (v. 7) mod_ldap-2.4.6-93.el7, mod_proxy_html-1:2.4.6-93.el7
- RHSA-2019:4126 Released 2019-12-10 · Red Hat rating Moderatehttpd24-httpd security, bug fix, and enhancement update
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) httpd24-1.1-19.el6, httpd24-build-1.1-19.el6, httpd24-httpd-2.4.34-15.el6 +12
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) httpd24-1.1-19.el7, httpd24-httpd-2.4.34-15.el7, httpd24-httpd-devel-2.4.34-15.el7 +12
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) httpd24-1.1-19.el7, httpd24-httpd-2.4.34-15.el7, httpd24-httpd-devel-2.4.34-15.el7 +12
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) httpd24-1.1-19.el7, httpd24-httpd-2.4.34-15.el7, httpd24-httpd-devel-2.4.34-15.el7 +12
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) httpd24-1.1-19.el7, httpd24-httpd-2.4.34-15.el7, httpd24-httpd-devel-2.4.34-15.el7 +12
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) httpd24-1.1-19.el6, httpd24-build-1.1-19.el6, httpd24-httpd-2.4.34-15.el6 +12
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) httpd24-1.1-19.el7, httpd24-httpd-2.4.34-15.el7, httpd24-httpd-devel-2.4.34-15.el7 +12
Show 3 more Red Hat advisories
- RHSA-2019:3932 Released 2019-11-20 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP Server 2.4.37 Security Release on RHEL 6
- Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-apr-1.6.3-63.jbcs.el6, jbcs-httpd24-apr-devel-1.6.3-63.jbcs.el6, jbcs-httpd24-apr-util-1.6.1-48.jbcs.el6 +37
- RHSA-2019:3933 Released 2019-11-20 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP Server 2.4.37 Security Release on RHEL 7
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr-1.6.3-63.jbcs.el7, jbcs-httpd24-apr-devel-1.6.3-63.jbcs.el7, jbcs-httpd24-apr-util-1.6.1-48.jbcs.el7 +37
- RHSA-2019:3935 Released 2019-11-20 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP Server 2.4.37 Security Release
- Red Hat JBoss Core Services
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2021:1809 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:1121 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:1121 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:1121 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:1121 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:1121 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:1121 |
| Red Hat JBoss Core Services | Fixed | RHSA-2019:3935 |
| Red Hat JBoss Core Services on RHEL 6 Server | Fixed | RHSA-2019:3932 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2019:3933 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2019:4126 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2019:4126 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) | Fixed | RHSA-2019:4126 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) | Fixed | RHSA-2019:4126 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) | Fixed | RHSA-2019:4126 |
| Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2019:4126 |
| Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2019:4126 |
Not affected: 7 products
- CloudForms Management Engine 5
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat JBoss Enterprise Application Platform 5
- Red Hat JBoss Enterprise Application Platform 6
- Red Hat JBoss Enterprise Web Server 2
- Red Hat JBoss Web Server 3
Timeline
- 2026-10-02 Threatist record created from CVE-2018-17199
- 2026-10-03 Alias added: GHSA-gxfm-3qhv-h52c
References
Advisory 11
- [debian-lts-announce] 20190129 [SECURITY] [DLA 1647-1] apache2 security update
- https://httpd.apache.org/security/vulnerabilities_24.html
- https://security.netapp.com/advisory/ntap-20190125-0001/
- GLSA-201903-21
- 20190403 [SECURITY] [DSA 4422-1] apache2 security update
- USN-3937-1
- DSA-4422
- RHSA-2019:3933
- RHSA-2019:3935
- RHSA-2019:3932
- RHSA-2019:4126
Other 15
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- [httpd-cvs] 20190815 svn commit: r1048743 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20190815 svn commit: r1048742 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03950en_us
- https://www.tenable.com/security/tns-2019-09
- [httpd-cvs] 20200401 svn commit: r1058586 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20200401 svn commit: r1058587 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/
- [httpd-cvs] 20210330 svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210330 svn commit: r1073139 [12/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1888194 [12/13] - /httpd/site/trunk/content/security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [12/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
More Apache Http Server vulnerabilities
- TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
- TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
- TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
- TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2018-17199 · CVE Program
- CVE-2018-17199 · NVD
- FIRST EPSS
- GHSA-gxfm-3qhv-h52c · GitHub Advisory Database · CC BY 4.0
- CVE-2018-17199 · Red Hat security data · CC BY 4.0
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