CVE-2018-0739

MEDIUM6.5EPSS 14.4%

openssl1.0 - security update

Published: 3/27/2018Modified: 11/19/2025

Also known as:DSA-4158-1ALPINE-CVE-2018-0739DEBIAN-CVE-2018-0739

Description

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).

Affected packages (6)

Alpine/opensslfrom 0, < 1.0.2o-r0
Debian/libtomcryptfrom 0, < 1.18.2-1
Debian/opensslfrom 0, < 1.1.0h-1
Debian/opensslfrom 0, < 1.0.1t-1+deb7u4
Debian/opensslfrom 0, < 1.0.1t-1+deb8u8
Debian/openssl1.0from 0, < 1.0.2l-2+deb9u3

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References (2)

ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2018-0739
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2018-0739