X.400 address type confusion in X.509 GeneralName
Noroxi assessment
Priority: Plan (action score 50/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 71.2% (FIRST EPSS); higher than 99.4% of all records.
- 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.
- Fixed version: OpenSSL OpenSSL 3.0.8.
- Mentioned 6 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Add it to your regular patch cycle. Upgrade to OpenSSL OpenSSL 3.0.8 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.
- BDU:2023-00665
- GHSA-x4qr-2fvf-3mr5
- ALSA-2023:0946
- ALSA-2023:1405
- ALSA-2023:2165
- ALSA-2023:2932
- ALSA-2025:7895
- ALSA-2025:7937
- DLA-3325-1
- DSA-5343-1
- openSUSE-SU-2024:12687-1
- openSUSE-SU-2024:12688-1
- openSUSE-SU-2024:12716-1
- openSUSE-SU-2024:12787-1
- openSUSE-SU-2024:12794-1
- openSUSE-SU-2024:12976-1
- openSUSE-SU-2024:13029-1
- openSUSE-SU-2024:13031-1
- openSUSE-SU-2024:13032-1
- openSUSE-SU-2024:13033-1
- Published
- Feb 8, 2023
- Updated
- Oct 14, 2026
- EPSS
- 71.2% · 99th percentile
- CWE
- CWE-843
Report tools
Action score
50
Plan
Add it to your regular patch cycle.
- CVSS
- 29 / 40 · 7.4 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 21 / 30 · 71.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.4
- CNA · openssl
- 7.4
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
| stormshield | stormshield management center | cpe:2.3:a:stormshield:stormshield_management_center |
| stormshield | stormshield network security | cpe:2.3:a:stormshield:stormshield_network_security |
Check your server's TLS configuration
The OpenSSL version can't be seen from outside; the free SSL checker tests your certificate, enabled TLS versions and weak ciphers. Confirm the version on your server with the package manager.
Run the SSL checkAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- openssl openssl1.0.2 and later · before 1.0.2zg
- openssl openssl1.1.1 and later · before 1.1.1t
- openssl openssl3.0.0 and later · before 3.0.8
- stormshield stormshield management centerbefore 3.3.3
- stormshield stormshield network security2.7.0 and later · before 2.7.11
- stormshield stormshield network security2.8.0 and later · before 3.7.34
- stormshield stormshield network security3.8.0 and later · before 3.11.22
- stormshield stormshield network security4.0.0 and later · before 4.3.16
- stormshield stormshield network security4.4.0 and later · before 4.6.3
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
- 3.0.0 and later · before 3.0.8affected · semver
- 1.1.1 and later · before 1.1.1taffected
- 1.0.2 and later · before 1.0.2zgaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | compat-openssl10 | before 1:1.0.2o-4.el8_10.1 | 1:1.0.2o-4.el8_10.1 |
| AlmaLinux:8 | edk2-aarch64 | before 20220126gitbb1bba3d77-4.el8 | 20220126gitbb1bba3d77-4.el8 |
| AlmaLinux:8 | edk2-ovmf | before 20220126gitbb1bba3d77-4.el8 | 20220126gitbb1bba3d77-4.el8 |
| AlmaLinux:8 | openssl | before 1:1.1.1k-9.el8_7 | 1:1.1.1k-9.el8_7 |
| AlmaLinux:8 | openssl-devel | before 1:1.1.1k-9.el8_7 | 1:1.1.1k-9.el8_7 |
| AlmaLinux:8 | openssl-libs | before 1:1.1.1k-9.el8_7 | 1:1.1.1k-9.el8_7 |
| AlmaLinux:8 | openssl-perl | before 1:1.1.1k-9.el8_7 | 1:1.1.1k-9.el8_7 |
| AlmaLinux:9 | compat-openssl11 | before 1:1.1.1k-5.el9_6.1 | 1:1.1.1k-5.el9_6.1 |
| AlmaLinux:9 | edk2-aarch64 | before 20221207gitfff6d81270b5-9.el9_2 | 20221207gitfff6d81270b5-9.el9_2 |
| AlmaLinux:9 | edk2-ovmf | before 20221207gitfff6d81270b5-9.el9_2 | 20221207gitfff6d81270b5-9.el9_2 |
| AlmaLinux:9 | edk2-tools | before 20221207gitfff6d81270b5-9.el9_2 | 20221207gitfff6d81270b5-9.el9_2 |
| AlmaLinux:9 | edk2-tools-doc | before 20221207gitfff6d81270b5-9.el9_2 | 20221207gitfff6d81270b5-9.el9_2 |
| AlmaLinux:9 | openssl | before 1:3.0.1-47.el9_1 | 1:3.0.1-47.el9_1 |
| AlmaLinux:9 | openssl-devel | before 1:3.0.1-47.el9_1 | 1:3.0.1-47.el9_1 |
| AlmaLinux:9 | openssl-libs | before 1:3.0.1-47.el9_1 | 1:3.0.1-47.el9_1 |
| AlmaLinux:9 | openssl-perl | before 1:3.0.1-47.el9_1 | 1:3.0.1-47.el9_1 |
| Alpine:v3.14 | openssl | from 1.0.2 · before 1.1.1t-r0 | 1.1.1t-r0 |
| Alpine:v3.15 | openssl3 | before 3.0.8-r0 | 3.0.8-r0 |
| Alpine:v3.17 | openssl | from 1.0.2 · before 3.0.8-r0 | 3.0.8-r0 |
| crates.io | openssl-src | from 0.0.0-0 · before 111.25.0 | 111.25.0 |
| crates.io | openssl-src | from 300.0.0 · before 300.0.12 | 300.0.12 |
| crates.io | openssl-src | before 111.25.0 | 111.25.0 |
| Debian:10 | openssl | before 1.1.1n-0+deb10u4 | 1.1.1n-0+deb10u4 |
| Debian:11 | openssl | before 1.1.1n-0+deb11u4 | 1.1.1n-0+deb11u4 |
+96
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
Published before and after this one in the same product
- ← EarlierCVE-2022-4450Feb 8, 2023 · Double free after calling PEM_read_bio_ex39Monitor
- ← EarlierCVE-2023-0215Feb 8, 2023 · Use-after-free following BIO_new_NDEF32Monitor
- Later →CVE-2022-4203Feb 24, 2023 · X.509 Name Constraints Read Buffer Overflow19Monitor
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 |
|---|---|---|
| OpenSSL OpenSSL | 3.0.8 | Vendor (CNA) |
| almalinux:compat-openssl10 | 1:1.0.2o-4.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:compat-openssl11 | 1:1.1.1k-5.el9_6.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:edk2-aarch64 | 20221207gitfff6d81270b5-9.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:edk2-ovmf | 20221207gitfff6d81270b5-9.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:edk2-tools | 20221207gitfff6d81270b5-9.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:edk2-tools-doc | 20221207gitfff6d81270b5-9.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl | 1:3.0.1-47.el9_1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-devel | 1:3.0.1-47.el9_1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-libs | 1:3.0.1-47.el9_1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-perl | 1:3.0.1-47.el9_1 · AlmaLinux:9 | Package registry (OSV) |
| alpine:openssl | 1.1.1t-r0 · Alpine:v3.14 | Package registry (OSV) |
| alpine:openssl3 | 3.0.8-r0 · Alpine:v3.15 | Package registry (OSV) |
| crates.io:openssl-src | 111.25.0 | Package registry (OSV) |
| crates.io:openssl-src | 300.0.12 | Package registry (OSV) |
| debian:openssl | 3.0.8-1 · Debian:12 | Package registry (OSV) |
| opensuse:oci-cli | 3.23.3-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:openssl-1_0_0 | 1.0.2p-150000.3.65.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:openssl-1_1 | 1.1.1d-150200.11.57.1 · openSUSE:Leap Micro 5.2 | Package registry (OSV) |
| opensuse:openssl-1_1-livepatches | 0.1-150400.3.3.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:openssl-3 | 3.0.1-150400.4.17.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:python310 | 3.10.12-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:python311 | 3.11.3-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:python312 | 3.12.0b3-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:python38 | 3.8.17-1.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:python39 | 3.9.17-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:rubygem-grpc | 1.52.0-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| PyPI:cryptography | 39.0.1 | Package registry (OSV) |
| red hat:edk2 | 0:20220126gitbb1bba3d77-3.el9_0.2 · Red Hat:rhel_eus:9.0::appstream | Package registry (OSV) |
| red hat:edk2-aarch64 | 0:20220126gitbb1bba3d77-3.el9_0.2 · Red Hat:rhel_eus:9.0::appstream | Package registry (OSV) |
+20
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
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.
No dated events beyond publication.
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.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- David Benjamin (Google)reporter
- Hugo Landauremediation developer
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).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-24-0015 · Jan 8, 2024( Mitsubishi Electric Zafiyeti)
- TR-23-0437 · Aug 2, 2023(Mozilla Firefox Güvenlik Güncellemesi)
- TR-23-0325 · Jun 6, 2023(Red Hat JBoss Enterprise Application Sunucu Güvenlik Güncellemesi)
- TR-23-0309 · May 31, 2023(IBM Güvenlik Bildirimi)
- TR-23-0300 · May 29, 2023(Dell Güvenlik Bildirimi)
- TR-23-0264 · May 5, 2023(IBM Güvenlik Bildirimi)
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
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/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
Show all references (19 more)Show less
- ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sig
- git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9
- git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658
- git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d
- security.gentoo.org/glsa/202402-08
- www.openssl.org/news/secadv/20230207.txt
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003
- cert-portal.siemens.com/productcert/html/ssa-028723.html
- cert-portal.siemens.com/productcert/html/ssa-203374.html
- cert-portal.siemens.com/productcert/html/ssa-264815.html
- cert-portal.siemens.com/productcert/html/ssa-337522.html
- cert-portal.siemens.com/productcert/html/ssa-398330.html
- cert-portal.siemens.com/productcert/html/ssa-455250.html
- cert-portal.siemens.com/productcert/html/ssa-556635.html
- cert-portal.siemens.com/productcert/html/ssa-561322.html
- cert-portal.siemens.com/productcert/html/ssa-625862.html
- cert-portal.siemens.com/productcert/html/ssa-769027.html
- cert-portal.siemens.com/productcert/html/ssa-794697.html
- cert-portal.siemens.com/productcert/html/ssa-879734.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.