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Vulnerability details: VCID-h1s3-pewe-7yc6
Vulnerability ID VCID-h1s3-pewe-7yc6
Aliases CVE-2018-0739
Summary Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-674 Uncontrolled Recursion
CWE-400 Uncontrolled Resource Consumption
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-0739.json
epss 0.0434 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.0434 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.0434 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.0434 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.13832 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.13832 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.13832 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.13832 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.13832 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.13832 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.13832 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
epss 0.13832 https://api.first.org/data/v1/epss?cve=CVE-2018-0739
cvssv3 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-0739
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2018-0739
archlinux Medium https://security.archlinux.org/AVG-540
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2018:3221
https://access.redhat.com/errata/RHSA-2018:3505
https://access.redhat.com/errata/RHSA-2019:1712
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-0739.json
https://api.first.org/data/v1/epss?cve=CVE-2018-0739
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0739
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2ac4c6f7b2b2af20c0e2b0ba05367e454cd11b33
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=9310d45087ae546e27e61ddf8f6367f29848220d
https://lists.debian.org/debian-lts-announce/2018/03/msg00033.html
https://nodejs.org/en/blog/vulnerability/march-2018-security-releases/
https://securityadvisories.paloaltonetworks.com/Home/Detail/133
https://security.gentoo.org/glsa/201811-21
https://security.gentoo.org/glsa/202007-53
https://security.netapp.com/advisory/ntap-20180330-0002/
https://www.debian.org/security/2018/dsa-4157
https://www.debian.org/security/2018/dsa-4158
https://www.openssl.org/news/secadv/20180327.txt
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.tenable.com/security/tns-2018-04
https://www.tenable.com/security/tns-2018-06
https://www.tenable.com/security/tns-2018-07
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/103518
http://www.securitytracker.com/id/1040576
1561266 https://bugzilla.redhat.com/show_bug.cgi?id=1561266
ASA-201804-2 https://security.archlinux.org/ASA-201804-2
AVG-540 https://security.archlinux.org/AVG-540
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
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:17.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
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-2018-0739 https://nvd.nist.gov/vuln/detail/CVE-2018-0739
RHSA-2018:3090 https://access.redhat.com/errata/RHSA-2018:3090
RHSA-2019:0366 https://access.redhat.com/errata/RHSA-2019:0366
RHSA-2019:0367 https://access.redhat.com/errata/RHSA-2019:0367
RHSA-2019:1711 https://access.redhat.com/errata/RHSA-2019:1711
USN-3611-1 https://usn.ubuntu.com/3611-1/
USN-3611-2 https://usn.ubuntu.com/3611-2/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-0739.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:N/S:U/C:N/I:N/A:H 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:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-0739
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:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-0739
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 0.88564
EPSS Score 0.0434
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:32:04.612531+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.4/main.json 37.0.0