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Vulnerability details: VCID-h8ut-regn-aaam
Vulnerability ID VCID-h8ut-regn-aaam
Aliases CVE-2017-9789
Summary When under stress, closing many connections, the HTTP/2 handling code in Apache httpd 2.4.26 would sometimes access memory after it has been freed, resulting in potentially erratic behaviour.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-9789.json
epss 0.01498 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.01498 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.02110 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.02110 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.03759 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.16374 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
epss 0.18609 https://api.first.org/data/v1/epss?cve=CVE-2017-9789
rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1470750
cvssv2 4 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 4.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
apache_httpd important https://httpd.apache.org/security/json/CVE-2017-9789.json
cvssv3.1 7.5 https://httpd.apache.org/security/vulnerabilities_24.html
generic_textual HIGH https://httpd.apache.org/security/vulnerabilities_24.html
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2017-9789
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-9789
archlinux Critical https://security.archlinux.org/AVG-350
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-9789.json
https://api.first.org/data/v1/epss?cve=CVE-2017-9789
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://httpd.apache.org/security/vulnerabilities_24.html
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/9d0098775bd83cf7c33ac5a077ef412c14ce939198921e639c734e20@%3Cannounce.httpd.apache.org%3E
https://lists.apache.org/thread.html/9d0098775bd83cf7c33ac5a077ef412c14ce939198921e639c734e20%40%3Cannounce.httpd.apache.org%3E
https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3E
https://security.gentoo.org/glsa/201710-32
https://security.netapp.com/advisory/ntap-20170911-0002/
https://support.apple.com/HT208221
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03908en_us
http://www.securityfocus.com/bid/99568
http://www.securitytracker.com/id/1038907
1470750 https://bugzilla.redhat.com/show_bug.cgi?id=1470750
ASA-201707-15 https://security.archlinux.org/ASA-201707-15
AVG-350 https://security.archlinux.org/AVG-350
cpe:2.3:a:apache:http_server:2.4.26:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:http_server:2.4.26:*:*:*:*:*:*:*
CVE-2017-9789 https://httpd.apache.org/security/json/CVE-2017-9789.json
CVE-2017-9789 https://nvd.nist.gov/vuln/detail/CVE-2017-9789
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-9789.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: AV:N/AC:H/Au:N/C:P/I:N/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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:H/PR:N/UI:N/S:U/C:L/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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://httpd.apache.org/security/vulnerabilities_24.html
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:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-9789
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:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-9789
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 0.86583
EPSS Score 0.01498
Published At Dec. 27, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.