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 me
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
- Updated
- Jun 16, 2026
- EPSS
- 82.1% · 100th percentile
- CWE
- CWE-200
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Report tools
Action score
48
Plan
Add it to your regular patch cycle.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 25 / 30 · 82.1%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
| pulsesecure | client | cpe:2.3:a:pulsesecure:client |
| pulsesecure | steel belted radius | cpe:2.3:a:pulsesecure:steel_belted_radius |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- openssl openssl1.0.1
- openssl openssl1.0.1a
- openssl openssl1.0.1b
- openssl openssl1.0.1c
- openssl openssl1.0.1d
- openssl openssl1.0.1e
- openssl openssl1.0.1f
- openssl openssl1.0.1g
- openssl openssl1.0.1h
- openssl openssl1.0.1i
- openssl openssl1.0.1j
- openssl openssl1.0.1k
- openssl openssl1.0.1l
- openssl openssl1.0.1m
- openssl openssl1.0.1n
- openssl openssl1.0.1o
- openssl openssl1.0.1p
- openssl openssl1.0.1q
- openssl openssl1.0.1r
- openssl openssl1.0.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | nss | before 3.13 | 3.13 |
| Debian:12 | openssl | before 1.0.0c-2 | 1.0.0c-2 |
| Red Hat:enterprise_linux:5::client | openssl | before 0:0.9.8e-39.el5_11 | 0:0.9.8e-39.el5_11 |
| Red Hat:enterprise_linux:5::client | openssl-debuginfo | before 0:0.9.8e-39.el5_11 | 0:0.9.8e-39.el5_11 |
| Red Hat:enterprise_linux:5::client | openssl-perl | before 0:0.9.8e-39.el5_11 | 0:0.9.8e-39.el5_11 |
| Red Hat:enterprise_linux:5::client_workstation | openssl-devel | before 0:0.9.8e-39.el5_11 | 0:0.9.8e-39.el5_11 |
| Red Hat:enterprise_linux:6::client | openssl | before 0:1.0.1e-42.el6_7.4 | 0:1.0.1e-42.el6_7.4 |
| Red Hat:enterprise_linux:6::client | openssl-debuginfo | before 0:1.0.1e-42.el6_7.4 | 0:1.0.1e-42.el6_7.4 |
| Red Hat:enterprise_linux:6::client | openssl-devel | before 0:1.0.1e-42.el6_7.4 | 0:1.0.1e-42.el6_7.4 |
| Red Hat:enterprise_linux:6::client | openssl-perl | before 0:1.0.1e-42.el6_7.4 | 0:1.0.1e-42.el6_7.4 |
| Red Hat:enterprise_linux:6::client | openssl-static | before 0:1.0.1e-42.el6_7.4 | 0:1.0.1e-42.el6_7.4 |
| Red Hat:enterprise_linux:6::client | openssl098e | before 0:0.9.8e-20.el6_7.1 | 0:0.9.8e-20.el6_7.1 |
| Red Hat:enterprise_linux:6::client | openssl098e-debuginfo | before 0:0.9.8e-20.el6_7.1 | 0:0.9.8e-20.el6_7.1 |
| Red Hat:enterprise_linux:6::hypervisor | rhev-hypervisor7 | before 0:7.2-20160302.1.el6ev | 0:7.2-20160302.1.el6ev |
| Red Hat:enterprise_linux:7::client | openssl | before 1:1.0.1e-51.el7_2.4 | 1:1.0.1e-51.el7_2.4 |
| Red Hat:enterprise_linux:7::client | openssl-debuginfo | before 1:1.0.1e-51.el7_2.4 | 1:1.0.1e-51.el7_2.4 |
| Red Hat:enterprise_linux:7::client | openssl-devel | before 1:1.0.1e-51.el7_2.4 | 1:1.0.1e-51.el7_2.4 |
| Red Hat:enterprise_linux:7::client | openssl-libs | before 1:1.0.1e-51.el7_2.4 | 1:1.0.1e-51.el7_2.4 |
| Red Hat:enterprise_linux:7::client | openssl-perl | before 1:1.0.1e-51.el7_2.4 | 1:1.0.1e-51.el7_2.4 |
| Red Hat:enterprise_linux:7::client | openssl-static | before 1:1.0.1e-51.el7_2.4 | 1:1.0.1e-51.el7_2.4 |
| Red Hat:enterprise_linux:7::client | openssl098e | before 0:0.9.8e-29.el7_2.3 | 0:0.9.8e-29.el7_2.3 |
| Red Hat:enterprise_linux:7::client | openssl098e-debuginfo | before 0:0.9.8e-29.el7_2.3 | 0:0.9.8e-29.el7_2.3 |
| Red Hat:enterprise_linux:7::hypervisor | rhev-hypervisor7 | before 0:7.2-20160302.1.el7ev | 0:7.2-20160302.1.el7ev |
| Red Hat:rhel_aus:5.9 | openssl | before 0:0.9.8e-26.el5_9.5 | 0:0.9.8e-26.el5_9.5 |
+50
Same product
openssl: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remKEV90Now
- CVE-2021-3711SM2 Decryption Buffer Overflow65This week
- CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code 65This week
- CVE-2016-2108The ASN.1 implementation in OpenSSL before 1.0.1o and 1.0.2 before 1.0.2c allows remote attackers to execute arbitrary code or cause a denia62This week
- CVE-2016-6309statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a den60This week
- CVE-2022-3786X.509 Email Address Variable Length Buffer Overflow58Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:nss | 3.13 · Debian:12 | Package registry (OSV) |
| debian:openssl | 1.0.0c-2 · Debian:12 | Package registry (OSV) |
| red hat:openssl | 0:1.0.1e-42.el6_7.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-debuginfo | 0:1.0.1e-42.el6_7.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-devel | 0:1.0.1e-42.el6_7.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-libs | 1:1.0.1e-51.el7_2.4 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-perl | 0:1.0.1e-42.el6_7.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-static | 0:1.0.1e-42.el6_7.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl098e | 0:0.9.8e-20.el6_7.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl098e-debuginfo | 0:0.9.8e-20.el6_7.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:rhev-hypervisor7 | 0:7.2-20160302.1.el6ev · Red Hat:enterprise_linux:6::hypervisor | Package registry (OSV) |
| suse:compat-openssl097g | 0.9.7g-146.22.41.1 · SUSE:Linux Enterprise Desktop 11 SP4 | Package registry (OSV) |
| suse:compat-openssl098 | 0.9.8j-94.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:openssl | 1.0.1i-27.13.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:openssl1 | 1.0.1g-0.40.1 · SUSE:Linux Enterprise Server 11-SECURITY | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Metasploit module | auxiliary/scanner/ssl/ssl_versionSSL/TLS Version Detectionauxiliary | 2014-10-14 |
| Proof-of-concept repository on GitHub | stars:5 | 2021-01-01 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Metasploit-505 d
- Published
- First PoC+1766 d
- TodaySep 30, 2026+3865 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-200 · Exposure of Sensitive Information to an Unauthorized ActorCVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Root cause
The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.
The bug in code
The whole CWE-200 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
{ "permissions": ["tabs", "<all_urls>"], "background": { "service_worker": "analytics.js" }}Fixed
{ "permissions": ["activeTab"], "host_permissions": ["https://yildiz.example/*"]}Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- ExcavationCAPEC-116likelihood: High · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
- FootprintingCAPEC-169likelihood: High · Very Low
- Exploiting Trust in ClientCAPEC-22likelihood: High · High
- FingerprintingCAPEC-224likelihood: High · Very Low
- ICMP Echo Request PingCAPEC-285likelihood: Medium · Low
- TCP SYN ScanCAPEC-287Low
- Enumerate Mail Exchange (MX) RecordsCAPEC-290Low
ATT&CK techniques
- System Service DiscoveryT1007
- System Network Configuration DiscoveryT1016
- Remote System DiscoveryT1018
- System Owner/User DiscoveryT1033
- Masquerading: Match Legitimate Name or LocationT1036.005
- Network Service ScanningT1046
- System Network Connections DiscoveryT1049
- Process DiscoveryT1057
- Permission Groups DiscoveryT1069
- System Information DiscoveryT1082
- File and Directory DiscoveryT1083
- Account DiscoveryT1087
- Multi-Factor Authentication InterceptionT1111
- Peripheral Device DiscoveryT1120
- System Time DiscoveryT1124
- Access Token Manipulation:Token Impersonation/TheftT1134.001
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- kb.juniper.net/InfoCenter/index?page=content&id=JSA10722
- kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.html
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.html
- marc.info/?l=bugtraq&m=145983526810210&w=2
- marc.info/?l=bugtraq&m=146108058503441&w=2
Vendor advisories and official records. Exploit/PoC links are deliberately left out.