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Vulnerability details: VCID-9b7k-c6gx-8kgx
Vulnerability ID VCID-9b7k-c6gx-8kgx
Aliases CVE-2018-19591
Summary In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-20 Improper Input Validation
CWE-400 Uncontrolled Resource Consumption
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-19591.json
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.00881 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.01479 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.01479 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.01479 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.01479 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.01508 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.01508 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.01508 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
epss 0.01508 https://api.first.org/data/v1/epss?cve=CVE-2018-19591
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2018-19591
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-19591
archlinux Medium https://security.archlinux.org/AVG-830
archlinux Medium https://security.archlinux.org/AVG-831
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-19591.json
https://api.first.org/data/v1/epss?cve=CVE-2018-19591
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19591
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO7WHN52GFMC5F2I2232GFIPSSXWFV7G/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M52KE4YR3GNMHQUOS3DKAGZD5TQ5D5UH/
https://security.gentoo.org/glsa/201903-09
https://security.gentoo.org/glsa/201908-06
https://security.netapp.com/advisory/ntap-20190321-0003/
https://sourceware.org/bugzilla/show_bug.cgi?id=23927
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=d527c860f5a3f0ed687bd03f0cb464612dc23408
https://sourceware.org/git/?p=glibc.git%3Ba=blob_plain%3Bf=NEWS%3Bhb=HEAD
http://www.securityfocus.com/bid/106037
http://www.securitytracker.com/id/1042174
1653993 https://bugzilla.redhat.com/show_bug.cgi?id=1653993
914837 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914837
AVG-830 https://security.archlinux.org/AVG-830
AVG-831 https://security.archlinux.org/AVG-831
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
CVE-2018-19591 https://nvd.nist.gov/vuln/detail/CVE-2018-19591
USN-4416-1 https://usn.ubuntu.com/4416-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-19591.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:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-19591
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-2018-19591
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 0.74431
EPSS Score 0.00881
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:34:31.754999+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4416-1/ 37.0.0