Timing attack against DSA

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Summary

CVECVE-2018-0734
StatePUBLISHED
Assigneropenssl
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-10-30 12:29:00 UTC
Updated2026-10-08 22:16:42 UTC
DescriptionThe OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.1a (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p).

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-327 | Constant time issue

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:M/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 18.10 All All All
Operating System Debian Debian Linux 9.0 All All All
Application Nodejs Node.js All All All All
Application Nodejs Node.js All All All All
Application Nodejs Node.js All All All All
Application Openssl Openssl 1.1.1 All All All
Application Openssl Openssl All All All All
Application Openssl Openssl All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenSSL OpenSSL affected Fixed in OpenSSL 1.1.1a (Affected 1.1.1) Not specified
CNA OpenSSL OpenSSL affected Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i) Not specified
CNA OpenSSL OpenSSL affected Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p) Not specified

References

ReferenceSourceLinkTags
git.openssl.org Git - openssl.git/commitdiff af854a3a-2127-422b-91ae-364da2661108 git.openssl.org
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
OpenSSL CVE-2018-0734 Side Channel Attack Information Disclosure Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
git.openssl.org Git - openssl.git/commitdiff af854a3a-2127-422b-91ae-364da2661108 git.openssl.org
[SECURITY] Fedora 30 Update: compat-openssl10-1.0.2o-7.fc30 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
January 2019 MySQL Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
April 2019 MySQL Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
Oracle Critical Patch Update - July 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
[SECURITY] Fedora 29 Update: compat-openssl10-1.0.2o-7.fc29 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Oracle Critical Patch Update - January 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
[security-announce] openSUSE-SU-2019:1814-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
[SECURITY] Fedora 31 Update: compat-openssl10-1.0.2o-8.fc31 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Debian -- Security Information -- DSA-4348-1 openssl af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
USN-3840-1: OpenSSL vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
Oracle Critical Patch Update Advisory - April 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
[R1] Nessus 7.1.4 Fixes Multiple Third-party Vulnerabilities - Security Advisory | Tenable® af854a3a-2127-422b-91ae-364da2661108 www.tenable.com Third Party Advisory
www.openssl.org/news/secadv/20181030.txt af854a3a-2127-422b-91ae-364da2661108 www.openssl.org Vendor Advisory
[security-announce] openSUSE-SU-2019:1547-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
git.openssl.org Git - openssl.git/commitdiff af854a3a-2127-422b-91ae-364da2661108 git.openssl.org
October 2018 OpenSSL Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
November 2018 Security Releases | Node.js af854a3a-2127-422b-91ae-364da2661108 nodejs.org Third Party Advisory
Debian -- Security Information -- DSA-4355-1 openssl1.0 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
Oracle Critical Patch Update Advisory - April 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
[R1] Nessus 8.1.1 Fixes Multiple Third-party Vulnerabilities - Security Advisory | Tenable® af854a3a-2127-422b-91ae-364da2661108 www.tenable.com Third Party Advisory
Oracle Critical Patch Update Advisory - January 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
git.openssl.org Git - openssl.git/commitdiff MITRE git.openssl.org
git.openssl.org Git - openssl.git/commitdiff MITRE git.openssl.org
git.openssl.org Git - openssl.git/commitdiff MITRE git.openssl.org
[SECURITY] Fedora 30 Update: compat-openssl10-1.0.2o-7.fc30 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 29 Update: compat-openssl10-1.0.2o-7.fc29 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 31 Update: compat-openssl10-1.0.2o-8.fc31 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Samuel Weiser (en)

Legacy QID Mappings

  • 296075 Oracle Solaris 11.4 Support Repository Update (SRU) 21.69.0 Missing (CPUAPR2020)
  • 296087 Oracle Solaris 11.4 Support Repository Update (SRU) 8.1.5 Missing (CPUAPR2019)
  • 296090 Oracle Solaris 11.4 Support Repository Update (SRU) 5.1.3 Missing (CPUJAN2019)
  • 377473 Alibaba Cloud Linux Security Update for Open Secure Sockets Layer (OpenSSL) (ALINUX2-SA-2019:0086)
  • 500432 Alpine Linux Security Update for nodejs
  • 500491 Alpine Linux Security Update for Open Secure Sockets Layer (OpenSSL)
  • 500559 Alpine Linux Security Update for Open Secure Sockets Layer (OpenSSL)
  • 500758 Alpine Linux Security Update for openssl
  • 501095 Alpine Linux Security Update for nodejs-current
  • 501158 Alpine Linux Security Update for openssl
  • 501977 Alpine Linux Security Update for Open Secure Sockets Layer3 (OpenSSL3)
  • 502896 Alpine Linux Security Update for openssl1.1-compat
  • 504195 Alpine Linux Security Update for nodejs
  • 504250 Alpine Linux Security Update for openssl
  • 690638 Free Berkeley Software Distribution (FreeBSD) Security Update for Open Secure Sockets Layer (OpenSSL) (238ae7de-dba2-11e8-b713-b499baebfeaf)
  • 900064 CBL-Mariner Linux Security Update for nodejs 8.11.4
  • 903261 Common Base Linux Mariner (CBL-Mariner) Security Update for nodejs (4295)

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