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Vulnerability details: VCID-fx6v-uce2-bkbs
Vulnerability ID VCID-fx6v-uce2-bkbs
Aliases CVE-2018-17199
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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-384 Session Fixation
CWE-613 Insufficient Session Expiration
System Score Found at
cvssv3 5.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-17199.json
epss 0.02245 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.02245 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.07953 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.08152 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
epss 0.08152 https://api.first.org/data/v1/epss?cve=CVE-2018-17199
cvssv3 4.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
apache_httpd low https://httpd.apache.org/security/json/CVE-2018-17199.json
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2018-17199
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-17199
archlinux High https://security.archlinux.org/AVG-857
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2019:3932
https://access.redhat.com/errata/RHSA-2019:3933
https://access.redhat.com/errata/RHSA-2019:3935
https://access.redhat.com/errata/RHSA-2019:4126
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-17199.json
https://api.first.org/data/v1/epss?cve=CVE-2018-17199
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17189
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17199
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0196
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0211
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0217
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0220
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://httpd.apache.org/security/vulnerabilities_24.html
https://lists.debian.org/debian-lts-announce/2019/01/msg00024.html
https://security.gentoo.org/glsa/201903-21
https://security.netapp.com/advisory/ntap-20190125-0001/
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.tenable.com/security/tns-2019-09
http://www.securityfocus.com/bid/106742
1668493 https://bugzilla.redhat.com/show_bug.cgi?id=1668493
920303 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=920303
ASA-201901-14 https://security.archlinux.org/ASA-201901-14
AVG-857 https://security.archlinux.org/AVG-857
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:santricity_cloud_connector:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:santricity_cloud_connector:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2018-17199 https://httpd.apache.org/security/json/CVE-2018-17199.json
CVE-2018-17199 https://nvd.nist.gov/vuln/detail/CVE-2018-17199
RHSA-2020:1121 https://access.redhat.com/errata/RHSA-2020:1121
RHSA-2021:1809 https://access.redhat.com/errata/RHSA-2021:1809
USN-3937-1 https://usn.ubuntu.com/3937-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-17199.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-17199
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-17199
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.83994
EPSS Score 0.02245
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:29:05.622356+00:00 Apache HTTPD Importer Import https://httpd.apache.org/security/json/CVE-2018-17199.json 37.0.0