CVE-2018-0739

MEDIUM

OpenSSL 1.0.2b-1.0.2n - Denial of Service via ASN.1 Recursive Type Parsing

Title source: llm
STIX 2.1

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).

References (34)

Core 34
Core References
Vendor Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20180726-0002/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3611-2/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4158
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201811-21
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0367
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4157
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3505
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/103518
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1040576
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3221
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/105609
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3611-1/
Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/03/msg00033.html
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0366
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3090
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:1711
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:1712
Patch, Third Party Advisory x_refsource_confirm
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202007-53
Third Party Advisory x_refsource_confirm
https://www.tenable.com/security/tns-2018-06
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20180330-0002/
Vendor Advisory x_refsource_confirm
https://www.openssl.org/news/secadv/20180327.txt
Third Party Advisory x_refsource_confirm
https://www.tenable.com/security/tns-2018-07
Third Party Advisory x_refsource_confirm
https://www.tenable.com/security/tns-2018-04

Scores

CVSS v3 6.5
EPSS 0.1444
EPSS Percentile 94.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Details

CWE
CWE-674
Status published
Products (7)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 17.10
debian/debian_linux 7.0
debian/debian_linux 8.0
debian/debian_linux 9.0
openssl/openssl 1.0.2b - 1.0.2n
Published Mar 27, 2018
Tracked Since Feb 18, 2026