X.509 Email Address 4-byte Buffer Overflow
A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address to overflow four attacker-controlled bytes on the stack. This buffer overflow could result in a crash (causing a denial of service) or potentially remote code execution. Many platforms implement stack overflow protections which would mitigate against the risk of remote code execution. The risk may be further mitigated based on stack layout for any given platform/compiler. Pre-announcements of CVE-2022-3602 described this issue as CRITICAL. Further analysis based on some of the mitigating factors described above have led this to be downgraded to HIGH. Users are still encouraged to upgrade to a new version as soon as possible. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects. Fixed in OpenSSL 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6).
- Published
- Nov 1, 2022
- Updated
- Jun 17, 2026
- EPSS
- 90.8% · 100th percentile
- CWE
- CWE-787
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Report tools
Action score
57
Plan
Add it to your regular patch cycle.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 27 / 30 · 90.8%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
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 |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| netapp | clustered data ontap | cpe:2.3:a:netapp:clustered_data_ontap |
| nodejs | node.js | cpe:2.3:a:nodejs:node.js |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- nodejs node.js18.0.0 and later · before 18.11.0
- nodejs node.js18.12.0
- nodejs node.js19.0.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (openssl). Independent of NVD's CPE analysis and usually ahead of it.
OpenSSL OpenSSL
- Fixed in OpenSSL 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6)affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:9 | openssl | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| AlmaLinux:9 | openssl-devel | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| AlmaLinux:9 | openssl-libs | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| AlmaLinux:9 | openssl-perl | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| Alpine:v3.15 | openssl3 | before 3.0.7-r0 | 3.0.7-r0 |
| Alpine:v3.17 | nodejs | before 18.12.1-r0 | 18.12.1-r0 |
| Alpine:v3.17 | openssl | from 3.0.0 · before 3.0.7-r0 | 3.0.7-r0 |
| crates.io | openssl-src | from 300.0.0 · before 300.0.11 | 300.0.11 |
| Debian:12 | openssl | before 3.0.7-1 | 3.0.7-1 |
| openSUSE:Tumbleweed | cargo-audit-advisory-db | before 20221102-1.1 | 20221102-1.1 |
| openSUSE:Tumbleweed | openssl-3 | before 3.0.7-1.1 | 3.0.7-1.1 |
| openSUSE:Tumbleweed | python-cryptography | before 38.0.3-1.1 | 38.0.3-1.1 |
| openSUSE:Tumbleweed | python-cryptography | before 44.0.0-1.1 | 44.0.0-1.1 |
| openSUSE:Tumbleweed | python-cryptography-vectors | before 44.0.0-1.1 | 44.0.0-1.1 |
| openSUSE:Tumbleweed | python-mitmproxy | before 11.1.2-1.1 | 11.1.2-1.1 |
| Red Hat:enterprise_linux:9::appstream | openssl-debuginfo | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| Red Hat:enterprise_linux:9::appstream | openssl-debugsource | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| Red Hat:enterprise_linux:9::appstream | openssl-devel | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| Red Hat:enterprise_linux:9::appstream | openssl-libs-debuginfo | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| Red Hat:enterprise_linux:9::appstream | openssl-perl | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| Red Hat:enterprise_linux:9::baseos | openssl | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| Red Hat:enterprise_linux:9::baseos | openssl-libs | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| Rocky Linux:9 | openssl | before 1:3.0.1-43.el9_0 | 1:3.0.1-43.el9_0 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP4 | openssl-3 | before 3.0.1-150400.4.11.1 | 3.0.1-150400.4.11.1 |
+1
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 |
|---|---|---|
| almalinux:openssl | 1:3.0.1-43.el9_0 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-devel | 1:3.0.1-43.el9_0 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-libs | 1:3.0.1-43.el9_0 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-perl | 1:3.0.1-43.el9_0 · AlmaLinux:9 | Package registry (OSV) |
| alpine:nodejs | 18.12.1-r0 · Alpine:v3.17 | Package registry (OSV) |
| alpine:openssl | 3.0.7-r0 · Alpine:v3.17 | Package registry (OSV) |
| alpine:openssl3 | 3.0.7-r0 · Alpine:v3.15 | Package registry (OSV) |
| crates.io:openssl-src | 300.0.11 | Package registry (OSV) |
| debian:openssl | 3.0.7-1 · Debian:12 | Package registry (OSV) |
| opensuse:cargo-audit-advisory-db | 20221102-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:openssl-3 | 3.0.1-150400.4.11.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:python-cryptography | 38.0.3-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:python-cryptography-vectors | 44.0.0-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:python-mitmproxy | 11.1.2-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:openssl | 1:3.0.1-43.el9_0 · Red Hat:enterprise_linux:9::baseos | Package registry (OSV) |
| red hat:openssl-debuginfo | 1:3.0.1-43.el9_0 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssl-debugsource | 1:3.0.1-43.el9_0 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssl-devel | 1:3.0.1-43.el9_0 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssl-libs | 1:3.0.1-43.el9_0 · Red Hat:enterprise_linux:9::baseos | Package registry (OSV) |
| red hat:openssl-libs-debuginfo | 1:3.0.1-43.el9_0 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssl-perl | 1:3.0.1-43.el9_0 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| rocky linux:openssl | 1:3.0.1-43.el9_0 · Rocky Linux:9 | Package registry (OSV) |
| suse:openssl-3 | 3.0.1-150400.4.11.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP4 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×8
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 |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:528 | 2022-10-28 |
| Proof-of-concept repository on GitHub | stars:169 | 2022-10-30 |
| Proof-of-concept repository on GitHub | stars:13 | 2022-10-31 |
| Proof-of-concept repository on GitHub | stars:3 | 2022-11-01 |
| Proof-of-concept repository on GitHub | stars:1 | 2022-11-02 |
| Proof-of-concept repository on GitHub | stars:17 | 2022-11-02 |
| Proof-of-concept repository on GitHub | stars:4 | 2022-11-03 |
| Proof-of-concept repository on GitHub | stars:4 | 2022-11-07 |
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.
- First PoC-5 d
- Published
- TodayOct 9, 2026+1438 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.
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
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-22-0729 · Dec 12, 2022(OpenSSL Güvenlik Güncellemesi )
- TR-22-0682 · Nov 9, 2022(Microsoft Güvenlik Güncellemesi)
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.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- packetstormsecurity.com/files/169687/OpenSSL-Security-Advisory-20221101.html
- www.openwall.com/lists/oss-security/2022/11/01/15
- www.openwall.com/lists/oss-security/2022/11/01/16
- www.openwall.com/lists/oss-security/2022/11/01/17
- www.openwall.com/lists/oss-security/2022/11/01/18
- www.openwall.com/lists/oss-security/2022/11/01/19
- www.openwall.com/lists/oss-security/2022/11/01/20
- www.openwall.com/lists/oss-security/2022/11/01/21
- www.openwall.com/lists/oss-security/2022/11/01/24
- www.openwall.com/lists/oss-security/2022/11/02/1
- www.openwall.com/lists/oss-security/2022/11/02/10
- www.openwall.com/lists/oss-security/2022/11/02/11
- www.openwall.com/lists/oss-security/2022/11/02/12
- www.openwall.com/lists/oss-security/2022/11/02/13
- www.openwall.com/lists/oss-security/2022/11/02/14
- www.openwall.com/lists/oss-security/2022/11/02/15
- www.openwall.com/lists/oss-security/2022/11/02/2
- www.openwall.com/lists/oss-security/2022/11/02/3
- www.openwall.com/lists/oss-security/2022/11/02/5
- www.openwall.com/lists/oss-security/2022/11/02/6
Vendor advisories and official records. Exploit/PoC links are deliberately left out.