CVE-2021-23841
Null pointer deref in X509_issuer_and_serial_hash()
MEDIUM 5.9
At a glance
- Source
- NVD
- EPSS
- EPSS 7.41 % · percentile 94 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- openssl
- NVD status
- Modified
Description
The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
- https://www.openssl.org/news/secadv/20210216.txt
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=122a19ab48091c657f7cb1fb3af9fc07bd557bbf
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807
- https://www.debian.org/security/2021/dsa-4855
- https://security.gentoo.org/glsa/202103-03
- http://seclists.org/fulldisclosure/2021/May/70
- http://seclists.org/fulldisclosure/2021/May/68
- http://seclists.org/fulldisclosure/2021/May/67
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.tenable.com/security/tns-2021-09
- https://security.netapp.com/advisory/ntap-20210513-0002/
- https://security.netapp.com/advisory/ntap-20210219-0009/
- https://www.tenable.com/security/tns-2021-03
- https://support.apple.com/kb/HT212529
- https://support.apple.com/kb/HT212528
- https://support.apple.com/kb/HT212534
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
- https://security.netapp.com/advisory/ntap-20240621-0006/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-1630
- GCVE · GCVE-0-2021-23841
CERT-FR advisories
- CERTFR-2026-AVI-0199 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0180 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0051 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
- CERTFR-2022-AVI-814 — Multiples vulnérabilités dans les produits SIEMENS · cert.ssi.gouv.fr
- CERTFR-2022-AVI-650 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
- CERTFR-2022-AVI-272 — Multiples vulnérabilités dans IBM QRadar · cert.ssi.gouv.fr
- CERTFR-2021-AVI-398 — Multiples vulnérabilités dans les produits Apple · cert.ssi.gouv.fr
- CERTFR-2021-AVI-374 — Multiples vulnérabilités dans Tenable Nessus · cert.ssi.gouv.fr
- CERTFR-2021-AVI-313 — Multiples vulnérabilités dans Stormshield Management Center · cert.ssi.gouv.fr
- CERTFR-2021-AVI-297 — Multiples vulnérabilités dans Oracle Java SE · cert.ssi.gouv.fr
- CERTFR-2021-AVI-296 — Multiples vulnérabilités dans Oracle MySQL · cert.ssi.gouv.fr
- CERTFR-2021-AVI-208 — Multiples vulnérabilités dans Tenable Nessus Agent · cert.ssi.gouv.fr
- CERTFR-2021-AVI-157 — Multiples vulnérabilités dans Tenable.sc · cert.ssi.gouv.fr
- CERTFR-2021-AVI-124 — Multiples vulnérabilités dans OpenSSL · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*≥ 1.0.2 < 1.0.2ycpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*≥ 1.1.1 < 1.1.1jcpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.11.0:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.11.1:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.12.0:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.12.1:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.13.0:*:*:*:*:*:*:*cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:*≥ 5.13.0 ≤ 5.17.0cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*< 14.1.1cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*< 14.6cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*< 14.6cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*≥ 11.1 < 11.4cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:business_intelligence:5.9.0.0.0:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.15.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:enterprise_manager_for_storage_management:13.4.0.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:essbase:21.2:*:*:*:*:*:*:*cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:jd_edwards_world_security:a9.4:*:*:*:*:*:*:*cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*< 8.0.23cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*< 5.7.33cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*≥ 8.0.15 < 8.0.23cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*cpe:2.3:a:siemens:sinec_ins:*:*:*:*:*:*:*:*< 1.0cpe:2.3:a:siemens:sinec_ins:1.0:-:*:*:*:*:*:*cpe:2.3:a:siemens:sinec_ins:1.0:sp1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| OpenSSL · OpenSSL | affected Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i) ; affected Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x) |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |