CVE-2019-1559: 0-byte record padding oracle
Published Feb 26, 2019
·Updated
A vulnerability was found in OpenSSL 1.0.2. When an application encounters a fatal protocol error and then calls SSLshutdown() twice, OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. This difference in behaviour can be detected by a remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable "non-stitched" ciphersuites must be in use. Also the application must call SSLshutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). AEAD ciphersuites are not impacted. This issue does not impact OpenSSL 1.1.1 or 1.1.0.
Upstream bug: https://www.openssl.org/news/secadv/20190226.txt
Upstream Patch: https://github.com/openssl/openssl/commit/e9bbefbf0f24c57645e7ad6a5a71ae649d18ac8e
Other sources
If an application encounters a fatal protocol error and then calls SSL ...
— Debian
OpenSSL could allow a remote attacker to obtain sensitive information, caused by the failure to immediately close the TCP connection after the hosts encounter a zero-length record with valid padding. An attacker could exploit this vulnerability using a 0-byte record padding-oracle attack to decrypt traffic.
— IBM
Affected Software
228 affected componentsFixes available
redhat/openssl<0:1.0.1e-58.el6_10
0:1.0.1e-58.el6_10
redhat/openssl<1:1.0.2k-19.el7
1:1.0.2k-19.el7
redhat/jws5-ecj<0:4.12.0-1.redhat_1.1.el6
0:4.12.0-1.redhat_1.1.el6
redhat/jws5-javapackages-tools<0:3.4.1-5.15.11.el6
0:3.4.1-5.15.11.el6
redhat/jws5-jboss-logging<0:3.3.2-1.Final_redhat_00001.1.el6
0:3.3.2-1.Final_redhat_00001.1.el6
redhat/jws5-tomcat<0:9.0.21-10.redhat_4.1.el6
0:9.0.21-10.redhat_4.1.el6
redhat/jws5-tomcat-native<0:1.2.21-34.redhat_34.el6
0:1.2.21-34.redhat_34.el6
redhat/jws5-tomcat-vault<0:1.1.8-1.Final_redhat_1.1.el6
0:1.1.8-1.Final_redhat_1.1.el6
redhat/jws5-ecj<0:4.12.0-1.redhat_1.1.el7
0:4.12.0-1.redhat_1.1.el7
redhat/jws5-javapackages-tools<0:3.4.1-5.15.11.el7
0:3.4.1-5.15.11.el7
redhat/jws5-jboss-logging<0:3.3.2-1.Final_redhat_00001.1.el7
0:3.3.2-1.Final_redhat_00001.1.el7
redhat/jws5-tomcat<0:9.0.21-10.redhat_4.1.el7
0:9.0.21-10.redhat_4.1.el7
redhat/jws5-tomcat-native<0:1.2.21-34.redhat_34.el7
0:1.2.21-34.redhat_34.el7
redhat/jws5-tomcat-vault<0:1.1.8-1.Final_redhat_1.1.el7
0:1.1.8-1.Final_redhat_1.1.el7
redhat/jws5-ecj<0:4.12.0-1.redhat_1.1.el8
0:4.12.0-1.redhat_1.1.el8
redhat/jws5-javapackages-tools<0:3.4.1-5.15.11.el8
0:3.4.1-5.15.11.el8
redhat/jws5-jboss-logging<0:3.3.2-1.Final_redhat_00001.1.el8
0:3.3.2-1.Final_redhat_00001.1.el8
redhat/jws5-tomcat<0:9.0.21-10.redhat_4.1.el8
0:9.0.21-10.redhat_4.1.el8
redhat/jws5-tomcat-native<0:1.2.21-34.redhat_34.el8
0:1.2.21-34.redhat_34.el8
redhat/jws5-tomcat-vault<0:1.1.8-1.Final_redhat_1.1.el8
0:1.1.8-1.Final_redhat_1.1.el8
redhat/imgbased<0:1.1.9-0.1.el7e
0:1.1.9-0.1.el7e
redhat/ovirt-node-ng<0:4.3.5-0.20190717.0.el7e
0:4.3.5-0.20190717.0.el7e
redhat/redhat-release-virtualization-host<0:4.3.5-2.el7e
0:4.3.5-2.el7e
redhat/redhat-virtualization-host<0:4.3.5-20190722.0.el7_7
0:4.3.5-20190722.0.el7_7
redhat/rhvm-appliance<0:4.3-20190722.0.el7
0:4.3-20190722.0.el7
IBM Security Verify Governance<=10.0
OpenSSL OpenSSL>=1.0.2<1.0.2r
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
Debian Debian Linux=8.0
Debian Debian Linux=9.0
NetApp Active Iq Unified Manager Windows>=7.3
NetApp Active Iq Unified Manager Vmware Vsphere>=9.5
NetApp Active Iq Unified Manager Windows
NetApp AltaVault
NetApp Cloud Backup
NetApp Clustered Data Ontap Antivirus Connector
NetApp Element Software
NetApp Hci Management Node
NetApp Hyper Converged Infrastructure
NetApp OnCommand Insight
NetApp OnCommand Unified Manager
NetApp Oncommand Unified Manager Vsphere
NetApp OnCommand Unified Manager Core Package
NetApp OnCommand Workflow Automation
NetApp ONTAP Select Deploy
NetApp ONTAP Select Deploy administration utility
NetApp Santricity Smi-s Provider
NetApp Service Processor
NetApp Smi-s Provider
NetApp Snapcenter
NetApp Snapdrive Unix
NetApp Snapdrive Windows
NetApp Snapprotect
NetApp Solidfire
NetApp Steelstore Cloud Integrated Storage
NetApp Storage Automation Store
NetApp Storagegrid>=9.0.0<=9.0.4
NetApp Storagegrid
NetApp Hci Compute Node
F5 BIG-IP Access Policy Manager>=12.1.0<=12.1.5
F5 BIG-IP Access Policy Manager>=13.0.0<=13.1.3
F5 BIG-IP Access Policy Manager>=14.0.0<=14.1.2
F5 BIG-IP Access Policy Manager>=15.0.0<=15.1.0
F5 BIG-IP Advanced Firewall Manager>=12.1.0<=12.1.5
F5 BIG-IP Advanced Firewall Manager>=13.0.0<=13.1.3
F5 BIG-IP Advanced Firewall Manager>=14.0.0<=14.1.2
F5 BIG-IP Advanced Firewall Manager>=15.0.0<=15.1.0
F5 BIG-IP Analytics>=12.1.0<=12.1.5
F5 BIG-IP Analytics>=13.0.0<=13.1.3
F5 BIG-IP Analytics>=14.0.0<=14.1.2
F5 BIG-IP Analytics>=15.0.0<=15.1.0
F5 Big-ip Application Acceleration Manager>=12.1.0<=12.1.5
F5 Big-ip Application Acceleration Manager>=13.0.0<=13.1.3
F5 Big-ip Application Acceleration Manager>=14.0.0<=14.1.2
F5 Big-ip Application Acceleration Manager>=15.0.0<=15.1.0
F5 BIG-IP Application Security Manager>=12.1.0<=12.1.5
F5 BIG-IP Application Security Manager>=13.0.0<=13.1.3
F5 BIG-IP Application Security Manager>=14.0.0<=14.1.2
F5 BIG-IP Application Security Manager>=15.0.0<=15.1.0
F5 Big-ip Domain Name System>=12.1.0<=12.1.5
F5 Big-ip Domain Name System>=13.0.0<=13.1.3
F5 Big-ip Domain Name System>=14.0.0<=14.1.2
F5 Big-ip Domain Name System>=15.0.0<=15.1.0
F5 BIG-IP Edge Gateway>=12.1.0<=12.1.5
F5 BIG-IP Edge Gateway>=13.0.0<=13.1.3
F5 BIG-IP Edge Gateway>=14.0.0<=14.1.2
F5 BIG-IP Edge Gateway>=15.0.0<=15.1.0
F5 Big-ip Fraud Protection Service>=12.1.0<=12.1.5
F5 Big-ip Fraud Protection Service>=13.0.0<=13.1.3
F5 Big-ip Fraud Protection Service>=14.0.0<=14.1.2
F5 Big-ip Fraud Protection Service>=15.0.0<=15.1.0
F5 Big-ip Global Traffic Manager>=12.1.0<=12.1.5
F5 Big-ip Global Traffic Manager>=13.0.0<=13.1.3
F5 Big-ip Global Traffic Manager>=14.0.0<=14.1.2
F5 Big-ip Global Traffic Manager>=15.0.0<=15.1.0
F5 Big-ip Link Controller>=12.1.0<=12.1.5
F5 Big-ip Link Controller>=13.0.0<=13.1.3
F5 Big-ip Link Controller>=14.0.0<=14.1.2
F5 Big-ip Link Controller>=15.0.0<=15.1.0
F5 Big-ip Local Traffic Manager>=12.1.0<=12.1.5
F5 Big-ip Local Traffic Manager>=13.0.0<=13.1.3
F5 Big-ip Local Traffic Manager>=14.0.0<=14.1.2
F5 Big-ip Local Traffic Manager>=15.0.0<=15.1.0
F5 Big-ip Policy Enforcement Manager>=12.1.0<=12.1.5
F5 Big-ip Policy Enforcement Manager>=13.0.0<=13.1.3
F5 Big-ip Policy Enforcement Manager>=14.0.0<=14.1.2
F5 Big-ip Policy Enforcement Manager>=15.0.0<=15.1.0
F5 Big-ip Webaccelerator>=12.1.0<=12.1.5
F5 Big-ip Webaccelerator>=13.0.0<=13.1.3
F5 Big-ip Webaccelerator>=14.0.0<=14.1.2
F5 Big-ip Webaccelerator>=15.0.0<=15.1.0
F5 BIG-IQ Centralized Management>=6.0.0<=6.1.0
F5 BIG-IQ Centralized Management>=7.0.0<=7.1.0
F5 Traffix Signaling Delivery Controller>=5.0.0<=5.1.0
F5 Traffix Signaling Delivery Controller=4.4.0
Tenable Nessus<=8.2.3
openSUSE Leap=15.0
openSUSE Leap=15.1
openSUSE Leap=42.3
All of the following
NetApp Cn1610 Firmware
NetApp Cn1610
All of the following
NetApp A320 Firmware
NetApp A320
All of the following
NetApp C190 Firmware
NetApp C190
All of the following
NetApp A220 Firmware
NetApp A220
All of the following
NetApp Fas2720 Firmware
NetApp Fas2720
All of the following
NetApp Fas2750 Firmware
NetApp Fas2750
All of the following
NetApp A800 Firmware
NetApp A800
Fedoraproject Fedora=29
Fedoraproject Fedora=30
Fedoraproject Fedora=31
McAfee Agent>=5.6.0<=5.6.4
McAfee Data Exchange Layer>=4.0.0<6.0.0
McAfee Threat Intelligence Exchange Server>=2.0.0<3.0.0
McAfee Web Gateway>=7.0.0<9.0.0
All of the following
redhat Jboss Enterprise Web Server=5.0.0
Any of the following
redhat Enterprise Linux=6.0
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
All of the following
Any of the following
redhat Virtualization=4.0
redhat Virtualization Host=4.0
redhat Enterprise Linux=7.0
redhat Enterprise Linux Desktop=6.0
redhat Enterprise Linux Desktop=7.0
redhat Enterprise Linux Server=6.0
redhat Enterprise Linux Server=7.0
redhat Enterprise Linux Workstation=6.0
redhat Enterprise Linux Workstation=7.0
Oracle API Gateway=11.1.2.4.0
Oracle Business Intelligence=11.1.1.9.0
Oracle Business Intelligence=12.2.1.3.0
Oracle Business Intelligence=12.2.1.4.0
Oracle Communications Diameter Signaling Router=8.0.0
Oracle Communications Diameter Signaling Router=8.1
Oracle Communications Diameter Signaling Router=8.2
Oracle Communications Diameter Signaling Router=8.3
Oracle Communications Diameter Signaling Router=8.4
Oracle Communications Performance Intelligence Center=10.4.0.2
Oracle Communications Session Border Controller=7.4
Oracle Communications Session Border Controller=8.0.0
Oracle Communications Session Border Controller=8.1.0
Oracle Communications Session Border Controller=8.2
Oracle Communications Session Border Controller=8.3
Oracle Communications Session Router=7.4
Oracle Communications Session Router=8.0
Oracle Communications Session Router=8.1
Oracle Communications Session Router=8.2
Oracle Communications Session Router=8.3
Oracle Communications Unified Session Manager=7.3.5
Oracle Communications Unified Session Manager=8.2.5
Oracle Endeca Server=7.7.0
Oracle Enterprise Manager Base Platform=12.1.0.5.0
Oracle Enterprise Manager Base Platform=13.2.0.0.0
Oracle Enterprise Manager Base Platform=13.3.0.0.0
Oracle Enterprise Manager Ops Center=12.3.3
Oracle Enterprise Manager Ops Center=12.4.0
Oracle JD Edwards EnterpriseOne Tools=9.2
Oracle Jd Edwards World Security=a9.3
Oracle Jd Edwards World Security=a9.3.1
Oracle Jd Edwards World Security=a9.4
Oracle MySQL>=5.6.0<=5.6.43
Oracle MySQL>=5.7.0<=5.7.25
Oracle MySQL>=8.0.0<=8.0.15
Oracle MySQL Enterprise Monitor<=4.0.8
Oracle MySQL Enterprise Monitor>=8.0.0<=8.0.14
Oracle MySQL Workbench<=8.0.16
Oracle PeopleSoft Enterprise PeopleTools=8.55
Oracle PeopleSoft Enterprise PeopleTools=8.56
Oracle PeopleSoft Enterprise PeopleTools=8.57
Oracle Secure Global Desktop=5.4
Oracle Services Tools Bundle=19.2
Palo Alto Networks PAN-OS>=7.1.0<7.1.15
Palo Alto Networks PAN-OS>=8.0.0<8.0.20
Palo Alto Networks PAN-OS>=8.1.0<8.1.8
Palo Alto Networks PAN-OS>=9.0.0<9.0.2
Nodejs Node.js>=6.0.0<=6.8.1
Nodejs Node.js>=6.9.0<6.17.0
Nodejs Node.js>=8.0.0<=8.8.1
Nodejs Node.js>=8.9.0<8.15.1
NetApp Cn1610 Firmware
NetApp Cn1610
NetApp A320 Firmware
NetApp A320
NetApp C190 Firmware
NetApp C190
NetApp A220 Firmware
NetApp A220
NetApp Fas2720 Firmware
NetApp Fas2720
NetApp Fas2750 Firmware
NetApp Fas2750
NetApp A800 Firmware
NetApp A800
redhat Jboss Enterprise Web Server=5.0.0
redhat Enterprise Linux=6.0
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
redhat Virtualization=4.0
redhat Virtualization Host=4.0
redhat/openssl<1.0.2
1.0.2
debian/openssl
1.1.1w-0+deb11u11.1.1w-0+deb11u73.0.20-1~deb12u13.0.20-1~deb12u23.5.6-1~deb13u13.5.6-1~deb13u23.6.2-1
Remediation
Information
As a workaround you can disable SHA384 if applications (compiled with OpenSSL) allow for adjustment of the ciphersuite string configuration.
Patch Available
Patch Available
Event History
Feb 26, 2019
CVE Published
12:00 AM
Feb 27, 2019
Data Sourced
via Red Hat·09:01 PM
DescriptionSeverityAffected Software
CVE Published
via MITRE·11:00 PM
Data Sourced
via MITRE·11:00 PM
DescriptionWeakness
Feb 23, 2026
Data Sourced
via Ubuntu·02:43 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Launchpad·02:43 PM
Description
Jun 10, 2026
Data Sourced
via Debian·01:26 AM
DescriptionAffected Software
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
1
What is the severity of CVE-2019-1559?
CVE-2019-1559 has a medium severity rating due to its potential for denial of service.
2
How do I fix CVE-2019-1559?
To fix CVE-2019-1559, upgrade to the latest version of OpenSSL as specified in the available updates.
3
Which versions of OpenSSL are affected by CVE-2019-1559?
CVE-2019-1559 affects OpenSSL versions prior to 1.0.2r.
4
What kind of applications are impacted by CVE-2019-1559?
Applications that use OpenSSL for SSL/TLS connections are impacted by CVE-2019-1559.
5
Is CVE-2019-1559 a critical vulnerability?
CVE-2019-1559 is not classified as critical; it is ranked medium due to specific exploitation conditions.