CVE-2018-0739

Impact:
Moderate
Public Date:
2018-03-27
Bugzilla:
1561266: CVE-2018-0739 openssl: Handling of crafted recursive ASN.1 structures can cause a stack overflow and resulting denial of service

The MITRE CVE dictionary describes this issue as:

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).

Find out more about CVE-2018-0739 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

CVSS3 Base Score 6.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity Impact None
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (ovmf) RHSA-2018:3090 2018-10-30
Red Hat JBoss Web Server 3.1 for RHEL 6 RHSA-2019:1711 2019-07-09
Red Hat JBoss Core Services on RHEL 6 Server RHSA-2019:0367 2019-02-18
Red Hat JBoss Web Server 3.1 for RHEL 7 RHSA-2019:1711 2019-07-09
Red Hat JBoss Core Services on RHEL 7 Server RHSA-2019:0367 2019-02-18
Red Hat Enterprise Linux 7 (openssl) RHSA-2018:3221 2018-10-30
Red Hat JBoss Web Server 3.1 RHSA-2019:1712 2019-07-09
Red Hat JBoss Core Services 1 RHSA-2019:0366 2019-02-18

Affected Packages State

Platform Package State
Red Hat JBoss EWS 2 openssl Will not fix
Red Hat JBoss EAP 6 openssl Will not fix
Red Hat JBoss EAP 5 openssl Will not fix
Red Hat Enterprise Linux 8 openssl Not affected
Red Hat Enterprise Linux 7 openssl098e Will not fix
Red Hat Enterprise Linux 7 OVMF Will not fix
Red Hat Enterprise Linux 6 openssl Will not fix
Red Hat Enterprise Linux 6 openssl098e Will not fix
Red Hat Enterprise Linux 5 openssl Out of support scope
Red Hat Enterprise Linux 5 openssl097a Out of support scope
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation