SSL/TLS: Cross-protocol attack on TLS using SSLv2 (DROWN)
Published Mar 1, 2016
5.9
MEDIUMCVSS 3.0
EPSS 82.11%
Description
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.
Affected products
No data.
Configuration 1
- 1.0.1
- 1.0.1
- 1.0.1
- 1.0.1
- 1.0.1a
- 1.0.1b
- 1.0.1c
- 1.0.1d
- 1.0.1e
- 1.0.1f
- 1.0.1g
- 1.0.1h
- 1.0.1i
- 1.0.1j
- 1.0.1k
- 1.0.1l
- 1.0.1m
- 1.0.1n
- 1.0.1o
- 1.0.1p
- 1.0.1q
- 1.0.1r
- 1.0.2
- 1.0.2
- 1.0.2
- 1.0.2
- 1.0.2a
- 1.0.2b
- 1.0.2c
- 1.0.2d
- 1.0.2e
- 1.0.2f
Configuration 2
- n/a
- n/a
No data.
RHEV 3.X Hypervisor and Agents for RHEL-6
rhev-hypervisor7-0:7.2-20160302.1.el6ev
Fixed · RHSA-2016:0379
RHEV 3.X Hypervisor and Agents for RHEL-7
rhev-hypervisor7-0:7.2-20160302.1.el7ev
Fixed · RHSA-2016:0379
Red Hat Enterprise Linux 4 Extended Lifecycle Support
openssl-0:0.9.7a-43.23.el4
Fixed · RHSA-2016:0306
Red Hat Enterprise Linux 5
openssl-0:0.9.8e-39.el5_11
Fixed · RHSA-2016:0302
Red Hat Enterprise Linux 5.6 Long Life
openssl-0:0.9.8e-12.el5_6.13
Fixed · RHSA-2016:0304
Red Hat Enterprise Linux 5.9 Long Life
openssl-0:0.9.8e-26.el5_9.5
Fixed · RHSA-2016:0304
Red Hat Enterprise Linux 6
openssl-0:1.0.1e-42.el6_7.4
Fixed · RHSA-2016:0301
Red Hat Enterprise Linux 6
openssl098e-0:0.9.8e-20.el6_7.1
Fixed · RHSA-2016:0372
Red Hat Enterprise Linux 6.2 Advanced Update Support
openssl-0:1.0.0-20.el6_2.8
Fixed · RHSA-2016:0303
Red Hat Enterprise Linux 6.4 Advanced Update Support
openssl-0:1.0.0-27.el6_4.5
Fixed · RHSA-2016:0303
Red Hat Enterprise Linux 6.5 Advanced Update Support
openssl-0:1.0.1e-16.el6_5.16
Fixed · RHSA-2016:0303
Red Hat Enterprise Linux 6.6 Extended Update Support
openssl-0:1.0.1e-30.el6_6.12
Fixed · RHSA-2016:0305
Red Hat Enterprise Linux 7
openssl-1:1.0.1e-51.el7_2.4
Fixed · RHSA-2016:0301
Red Hat Enterprise Linux 7
openssl098e-0:0.9.8e-29.el7_2.3
Fixed · RHSA-2016:0372
Red Hat Enterprise Linux 7.1 Extended Update Support
openssl-1:1.0.1e-42.ael7b_1.10
Fixed · RHSA-2016:0305
Red Hat JBoss Enterprise Application Platform 6.4
openssl
Fixed · RHSA-2016:0490
Red Hat JBoss Operations Network 3.3
n/a
Fixed · RHSA-2016:1519
Red Hat JBoss Web Server 2.1
n/a
Fixed · RHSA-2016:0445
Red Hat JBoss Web Server 3.0
n/a
Fixed · RHSA-2016:0446
Red Hat Enterprise Linux 5
nss
Not affected
Red Hat Enterprise Linux 5
openssl097a
Will not fix
Red Hat Enterprise Linux 6
guest-images
Affected
Red Hat Enterprise Linux 6
nss
Not affected
Red Hat Enterprise Linux 7
nss
Not affected
Red Hat Enterprise Linux 7
rhel-guest-image
Affected
Red Hat JBoss Enterprise Application Platform 5
openssl
Not affected
Red Hat JBoss Enterprise Web Server 2
openssl
Affected
Red Hat JBoss Enterprise Web Server 3
openssl
Affected
Red Hat JBoss Operations Network 3
CoreServer
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| RHEV 3.X Hypervisor and Agents for RHEL-6 | rhev-hypervisor7-0:7.2-20160302.1.el6ev | Fixed | RHSA-2016:0379 |
| RHEV 3.X Hypervisor and Agents for RHEL-7 | rhev-hypervisor7-0:7.2-20160302.1.el7ev | Fixed | RHSA-2016:0379 |
| Red Hat Enterprise Linux 4 Extended Lifecycle Support | openssl-0:0.9.7a-43.23.el4 | Fixed | RHSA-2016:0306 |
| Red Hat Enterprise Linux 5 | openssl-0:0.9.8e-39.el5_11 | Fixed | RHSA-2016:0302 |
| Red Hat Enterprise Linux 5.6 Long Life | openssl-0:0.9.8e-12.el5_6.13 | Fixed | RHSA-2016:0304 |
| Red Hat Enterprise Linux 5.9 Long Life | openssl-0:0.9.8e-26.el5_9.5 | Fixed | RHSA-2016:0304 |
| Red Hat Enterprise Linux 6 | openssl-0:1.0.1e-42.el6_7.4 | Fixed | RHSA-2016:0301 |
| Red Hat Enterprise Linux 6 | openssl098e-0:0.9.8e-20.el6_7.1 | Fixed | RHSA-2016:0372 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | openssl-0:1.0.0-20.el6_2.8 | Fixed | RHSA-2016:0303 |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | openssl-0:1.0.0-27.el6_4.5 | Fixed | RHSA-2016:0303 |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | openssl-0:1.0.1e-16.el6_5.16 | Fixed | RHSA-2016:0303 |
| Red Hat Enterprise Linux 6.6 Extended Update Support | openssl-0:1.0.1e-30.el6_6.12 | Fixed | RHSA-2016:0305 |
| Red Hat Enterprise Linux 7 | openssl-1:1.0.1e-51.el7_2.4 | Fixed | RHSA-2016:0301 |
| Red Hat Enterprise Linux 7 | openssl098e-0:0.9.8e-29.el7_2.3 | Fixed | RHSA-2016:0372 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | openssl-1:1.0.1e-42.ael7b_1.10 | Fixed | RHSA-2016:0305 |
| Red Hat JBoss Enterprise Application Platform 6.4 | openssl | Fixed | RHSA-2016:0490 |
| Red Hat JBoss Operations Network 3.3 | n/a | Fixed | RHSA-2016:1519 |
| Red Hat JBoss Web Server 2.1 | n/a | Fixed | RHSA-2016:0445 |
| Red Hat JBoss Web Server 3.0 | n/a | Fixed | RHSA-2016:0446 |
| Red Hat Enterprise Linux 5 | nss | Not affected | n/a |
| Red Hat Enterprise Linux 5 | openssl097a | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | guest-images | Affected | n/a |
| Red Hat Enterprise Linux 6 | nss | Not affected | n/a |
| Red Hat Enterprise Linux 7 | nss | Not affected | n/a |
| Red Hat Enterprise Linux 7 | rhel-guest-image | Affected | n/a |
| Red Hat JBoss Enterprise Application Platform 5 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 2 | openssl | Affected | n/a |
| Red Hat JBoss Enterprise Web Server 3 | openssl | Affected | n/a |
| Red Hat JBoss Operations Network 3 | CoreServer | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (27 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 82.11% (0.82112) | 99.65th | v5 (v2026.06.15) |
| Sep 22, 2026 | 82.11% (0.82112) | 99.64th | v5 (v2026.06.15) |
| Sep 21, 2026 | 78.39% (0.78392) | 99.58th | v5 (v2026.06.15) |
| Sep 6, 2026 | 82.11% (0.82112) | 99.63th | v5 (v2026.06.15) |
| Sep 5, 2026 | 78.39% (0.78392) | 99.57th | v5 (v2026.06.15) |
| Aug 30, 2026 | 82.11% (0.82112) | 99.63th | v5 (v2026.06.15) |
| Aug 28, 2026 | 78.39% (0.78392) | 99.56th | v5 (v2026.06.15) |
| Aug 24, 2026 | 82.11% (0.82112) | 99.63th | v5 (v2026.06.15) |
| Aug 23, 2026 | 78.39% (0.78392) | 99.56th | v5 (v2026.06.15) |
| Jun 15, 2026 | 82.11% (0.82112) | 99.61th | v5 (v2026.06.15) |
| Mar 4, 2026 | 89.91% (0.89906) | 99.56th | v4 (v2025.03.14) |
| Mar 1, 2026 | 88.38% (0.88377) | 99.49th | v4 (v2025.03.14) |
| Feb 4, 2026 | 89.99% (0.89994) | 99.56th | v4 (v2025.03.14) |
| Feb 1, 2026 | 88.49% (0.88494) | 99.49th | v4 (v2025.03.14) |
| Jan 4, 2026 | 89.91% (0.89906) | 99.55th | v4 (v2025.03.14) |
| Jan 1, 2026 | 88.38% (0.88377) | 99.48th | v4 (v2025.03.14) |
| May 4, 2025 | 89.91% (0.89906) | 99.53th | v4 (v2025.03.14) |
| May 1, 2025 | 88.38% (0.88377) | 99.46th | v4 (v2025.03.14) |
| Mar 17, 2025 | 90.33% (0.90328) | 99.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 94.34% (0.94344) | 99.30th | v3 (v2023.03.01) |
| Nov 20, 2023 | 95.24% (0.95243) | 99.15th | v3 (v2023.03.01) |
| Sep 14, 2023 | 94.99% (0.94991) | 99.01th | v3 (v2023.03.01) |
| Mar 14, 2023 | 95.88% (0.95877) | 99.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.22% (0.96216) | 99.15th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.56% (0.07559) | 92.87th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.56% (0.07559) | 92.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.56% (0.07559) | 81.11th | v2 (v2022.01.01) |
References (69)
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- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html vendor-advisory
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- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html vendor-advisory
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- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html vendor-advisory
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- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html vendor-advisory
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- http://marc.info/?l=bugtraq&m=145983526810210&w=2 vendor-advisory
- http://marc.info/?l=bugtraq&m=146108058503441&w=2 vendor-advisory
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- http://rhn.redhat.com/errata/RHSA-2016-1519.html vendor-advisory
- http://support.citrix.com/article/CTX208403
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl vendor-advisory
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160330-01-openssl-en
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
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- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-623229.pdf
- https://drownattack.com
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Change history (0)
No recorded changes yet.