CVE-2018-0739 Information

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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).

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

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.securityfocus.com/bid/105609 http://www.securitytracker.com/id/1040576 https://access.redhat.com/errata/RHSA-2018:3090 https://access.redhat.com/errata/RHSA-2018:3221 https://access.redhat.com/errata/RHSA-2018:3505 https://access.redhat.com/errata/RHSA-2019:0366 https://access.redhat.com/errata/RHSA-2019:0367 https://access.redhat.com/errata/RHSA-2019:1711 https://access.redhat.com/errata/RHSA-2019:1712 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2ac4c6f7b2b2af20c0e2b0ba05367e454cd11b33 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9310d45087ae546e27e61ddf8f6367f29848220d https://lists.debian.org/debian-lts-announce/2018/03/msg00033.html https://nodejs.org/en/blog/vulnerability/march-2018-security-releases/ https://security.gentoo.org/glsa/201811-21 https://security.gentoo.org/glsa/202007-53 https://security.netapp.com/advisory/ntap-20180330-0002/ https://security.netapp.com/advisory/ntap-20180726-0002/ https://securityadvisories.paloaltonetworks.com/Home/Detail/133 https://usn.ubuntu.com/3611-1/ https://usn.ubuntu.com/3611-2/ 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/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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5