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Mend.io Vulnerability Database

CVE-2018-0732

Date: June 12, 2018

During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).

Language: Python

Severity Score

7.5

Related Resources (42)

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/

Url: https://access.redhat.com/errata/RHSA-2019:1297

Url: https://security.gentoo.org/glsa/201811-03

Url: https://www.oracle.com/security-alerts/cpuapr2020.html

Url: https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

Url: https://access.redhat.com/errata/RHSA-2019:1296

Url: http://www.securityfocus.com/bid/104442

Url: https://access.redhat.com/errata/RHSA-2018:3505

Url: https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html

Url: https://security-tracker.debian.org/tracker/CVE-2018-0732

Url: https://usn.ubuntu.com/3692-1/

Url: https://www.debian.org/security/2018/dsa-4348

Url: http://www.securitytracker.com/id/1041090

Url: https://www.oracle.com/security-alerts/cpujan2021.html

Url: https://securityadvisories.paloaltonetworks.com/Home/Detail/133

Url: https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

Url: https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html

Url: https://security.netapp.com/advisory/ntap-20181105-0001/

Url: https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf

Url: https://www.tenable.com/security/tns-2018-12

Url: https://www.tenable.com/security/tns-2018-13

Url: https://www.tenable.com/security/tns-2018-14

Url: https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ea7abeeabf92b7aca160bdd0208636d4da69f4f4

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/

Url: https://www.tenable.com/security/tns-2018-17

Url: https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3984ef0b72831da8b3ece4745cac4f8575b19098

Url: http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2018-0732

Url: https://access.redhat.com/errata/RHSA-2019:1543

Url: https://access.redhat.com/security/cve/CVE-2018-0732

Url: https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/

Url: https://usn.ubuntu.com/3692-2/

Url: https://security.netapp.com/advisory/ntap-20190118-0002/

Url: https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html

Url: https://www.debian.org/security/2018/dsa-4355

Url: https://www.openssl.org/news/secadv/20180612.txt

Url: https://access.redhat.com/errata/RHSA-2018:2553

Url: https://security.alpinelinux.org/vuln/CVE-2018-0732

Url: https://access.redhat.com/errata/RHSA-2018:2552

Url: https://access.redhat.com/errata/RHSA-2018:3221

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/

Url: https://www.mend.io/vulnerability-database/CVE-2018-0732

Severity Score

7.5

Weakness Type (CWE)

Key Management Errors

CWE-320

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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CVE-2018-0732

Date: June 12, 2018

Language: Python

Severity Score

Related Resources (42)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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