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CVE-2016-0800

The SSLv2 protocol, as used in OpenSSL before 1.0.1s and 1.0.2 before 1.0.2g and other products, requires a server to send a ServerVerify message before establishing that a client possesses certain plaintext RSA data, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a "DROWN" attack.

Published:Mar 1, 2016

Last Modified:Apr 12, 2025

EPS:Mar 1, 2016

EPSS Score:0.90154

CVSS Score:5.9

Affected Products

Vendor

Product

Action

Vendor

Openssl

Product

Openssl

Openssl

Openssl

Vendor

Pulsesecure

Product

Client

Pulsesecure

Client

Vendor

Pulsesecure

Product

Steel Belted Radius

Pulsesecure

Steel Belted Radius

Vendor

Redhat

Product

Enterprise Linux

Redhat

Enterprise Linux

Vendor

Redhat

Product

Jboss Enterprise Application Platform

Redhat

Jboss Enterprise Application Platform

Vendor

Redhat

Product

Jboss Enterprise Web Server

Redhat

Jboss Enterprise Web Server

Vendor

Redhat

Product

Jboss Operations Network

Redhat

Jboss Operations Network

Vendor

Redhat

Product

Rhel Aus

Redhat

Rhel Aus

Vendor

Redhat

Product

Rhel Els

Redhat

Rhel Els

Vendor

Redhat

Product

Rhel Eus

Redhat

Rhel Eus

Vendor

Redhat

Product

Rhel Mission Critical

Redhat

Rhel Mission Critical

Exploits

https://github.com/anthophilee/A2SV--SSL-VUL-Scan

Common Weakness Enumeration

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-116 Excavation

CAPEC-13 Subverting Environment Variable Values

CAPEC-169 Footprinting

CAPEC-22 Exploiting Trust in Client

CAPEC-224 Fingerprinting

CAPEC-285 ICMP Echo Request Ping

CAPEC-287 TCP SYN Scan

CAPEC-290 Enumerate Mail Exchange (MX) Records

CAPEC-291 DNS Zone Transfers

CAPEC-292 Host Discovery

CAPEC-293 Traceroute Route Enumeration

CAPEC-294 ICMP Address Mask Request

CAPEC-295 Timestamp Request

CAPEC-296 ICMP Information Request

CAPEC-297 TCP ACK Ping

CAPEC-298 UDP Ping

CAPEC-299 TCP SYN Ping

CAPEC-300 Port Scanning

CAPEC-301 TCP Connect Scan

CAPEC-302 TCP FIN Scan

CAPEC-303 TCP Xmas Scan

CAPEC-304 TCP Null Scan

CAPEC-305 TCP ACK Scan

CAPEC-306 TCP Window Scan

CAPEC-307 TCP RPC Scan

CAPEC-308 UDP Scan

CAPEC-309 Network Topology Mapping

CAPEC-310 Scanning for Vulnerable Software

CAPEC-312 Active OS Fingerprinting

CAPEC-313 Passive OS Fingerprinting

CAPEC-317 IP ID Sequencing Probe

CAPEC-318 IP 'ID' Echoed Byte-Order Probe

CAPEC-319 IP (DF) 'Don't Fragment Bit' Echoing Probe

CAPEC-320 TCP Timestamp Probe

CAPEC-321 TCP Sequence Number Probe

CAPEC-322 TCP (ISN) Greatest Common Divisor Probe

CAPEC-323 TCP (ISN) Counter Rate Probe

CAPEC-324 TCP (ISN) Sequence Predictability Probe

CAPEC-325 TCP Congestion Control Flag (ECN) Probe

CAPEC-326 TCP Initial Window Size Probe

CAPEC-327 TCP Options Probe

CAPEC-328 TCP 'RST' Flag Checksum Probe

CAPEC-329 ICMP Error Message Quoting Probe

CAPEC-330 ICMP Error Message Echoing Integrity Probe

CAPEC-472 Browser Fingerprinting

CAPEC-497 File Discovery

CAPEC-508 Shoulder Surfing

CAPEC-573 Process Footprinting

CAPEC-574 Services Footprinting

CAPEC-575 Account Footprinting

CAPEC-576 Group Permission Footprinting

CAPEC-577 Owner Footprinting

CAPEC-59 Session Credential Falsification through Prediction

CAPEC-60 Reusing Session IDs (aka Session Replay)

CAPEC-616 Establish Rogue Location

CAPEC-643 Identify Shared Files/Directories on System

CAPEC-646 Peripheral Footprinting

CAPEC-651 Eavesdropping

CAPEC-79 Using Slashes in Alternate Encoding

Related CVEs

CVE-2026-75803 (CVSS 9.1) — Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty ciphertext can report success without ve…

CVE-2026-63075 (CVSS 7.5) — Issue summary: When OpenSSL processes QUIC traffic from a peer that repeatedly sends ack-eliciting packets whi…

CVE-2026-63072 (CVSS 7.5) — Issue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based on querying the unwrapped key s…

CVE-2026-54874 (CVSS 7.5) — Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to b…

CVE-2026-14457 (CVSS 7.5) — Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs) enabled, and only the p…

CVE-2026-63076 (CVSS 7.5) — Issue summary: OpenSSL CMP password based protection verification only checks whether the protectionAlg parame…

CVE-2026-63074 (CVSS 5.9) — Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) s…

CVE-2026-63073 (CVSS 9.8) — Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directl…

CVE-2026-18798 (CVSS 7.5) — Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for i…

CVE-2026-14456 (CVSS 7.5) — Issue summary: When an OpenSSL QUIC server (Listener SSL object) processes valid QUIC Initial packets for unkn…

References

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10722

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.html

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.html

http://marc.info/?l=bugtraq&m=145983526810210&w=2

http://marc.info/?l=bugtraq&m=146108058503441&w=2

http://marc.info/?l=bugtraq&m=146133665209436&w=2

http://rhn.redhat.com/errata/RHSA-2016-1519.html

http://support.citrix.com/article/CTX208403

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160330-01-openssl-en

http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html

http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

http://www.securityfocus.com/bid/83733

http://www.securityfocus.com/bid/91787

http://www.securitytracker.com/id/1035133

http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-623229.pdf

https://access.redhat.com/security/vulnerabilities/drown

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-623229.pdf

https://drownattack.com

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03726en_us

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_us

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05068681

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05073516

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05086877

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05096953

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05141441

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05143554

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150800

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157667

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05176765

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05307589

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05386804

https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes

https://ics-cert.us-cert.gov/advisories/ICSA-16-103-03

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168

https://kc.mcafee.com/corporate/index?page=content&id=SB10154

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.asc

https://security.gentoo.org/glsa/201603-15

https://security.netapp.com/advisory/ntap-20160301-0001/

https://www.arista.com/en/support/advisories-notices/security-advisories/1260-security-advisory-18

https://www.kb.cert.org/vuls/id/583776

https://www.openssl.org/news/secadv/20160301.txt

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10722

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.html

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.html

http://marc.info/?l=bugtraq&m=145983526810210&w=2

http://marc.info/?l=bugtraq&m=146108058503441&w=2

http://marc.info/?l=bugtraq&m=146133665209436&w=2

http://rhn.redhat.com/errata/RHSA-2016-1519.html

http://support.citrix.com/article/CTX208403

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160330-01-openssl-en

http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html

http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

http://www.securityfocus.com/bid/83733

http://www.securityfocus.com/bid/91787

http://www.securitytracker.com/id/1035133

http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-623229.pdf

https://access.redhat.com/security/vulnerabilities/drown

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-623229.pdf

https://drownattack.com

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03726en_us

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_us

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05068681

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05073516

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05086877

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05096953

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05141441

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05143554

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150800

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157667

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05176765

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05307589

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05386804

https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes

https://ics-cert.us-cert.gov/advisories/ICSA-16-103-03

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168

https://kc.mcafee.com/corporate/index?page=content&id=SB10154

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.asc

https://security.gentoo.org/glsa/201603-15

https://security.netapp.com/advisory/ntap-20160301-0001/

https://www.arista.com/en/support/advisories-notices/security-advisories/1260-security-advisory-18

https://www.kb.cert.org/vuls/id/583776

https://www.openssl.org/news/secadv/20160301.txt

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High