Vulnerability CVE-2018-0739
Published: 2018-03-27

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).

Type:

CWE-400

 (Uncontrolled Resource Consumption ('Resource Exhaustion'))

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Openssl -> Openssl 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
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://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.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.tenable.com/security/tns-2018-04
https://www.tenable.com/security/tns-2018-06
https://www.tenable.com/security/tns-2018-07
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