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TI-2023-00439 Aliases CVE-2023-0464GHSA-w2w6-xp88-5cvw

Excessive Resource Usage Verifying X.509 Policy Constraints

Priority MEDIUM 46CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 9 fixed, 5 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-295.

Summary

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03985 90th percentileScored 2026-11-07
Fix Partial OpenSSL (OpenSSL): 3.1.1, 3.0.9, 1.1.1u +1Red Hat: 5 advisoriesRed Hat: 9 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenSSLOpenSSL3.1.0 to before 3.1.1; 3.0.0 to before 3.0.9; 1.1.1 to before 1.1.1u; 1.0.2 to before 1.0.2zh3.1.1, 3.0.9, 1.1.1u, 1.0.2zhPatch availableCNA
  • OpenSSL VendorOpenSSL Affected 3.1.0 to before 3.1.1; 3.0.0 to before 3.0.9; 1.1.1 to before 1.1.1u; 1.0.2 to before 1.0.2zh Fixed in 3.1.1, 3.0.9, 1.1.1u, 1.0.2zh Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*1.0.2 to before 1.0.2zh; 1.1.1 to before 1.1.1u; 3.0.0 to before 3.0.9; 3.1.0 to before 3.1.1VulnerableOpenSSL
  • cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* Versions 1.0.2 to before 1.0.2zh; 1.1.1 to before 1.1.1u; 3.0.0 to before 3.0.9; 3.1.0 to before 3.1.1 Vulnerable ·OpenSSL

Remediation

  • Fix · CNA OpenSSL (OpenSSL) Fixed in 3.1.1, 3.0.9, 1.1.1u, 1.0.2zh

Red Hat 5 advisories

  • RHSA-2023:7626 Released 2023-12-07 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.57 SP2 security update
    • Red Hat JBoss Core Services
  • RHSA-2023:7625 Released 2023-12-07 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.57 SP2 security update
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl-8.4.0-2.el7jbcs, jbcs-httpd24-libcurl-8.4.0-2.el7jbcs, jbcs-httpd24-libcurl-devel-8.4.0-2.el7jbcs +8
    • Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl-8.4.0-2.el8jbcs, jbcs-httpd24-libcurl-8.4.0-2.el8jbcs, jbcs-httpd24-libcurl-devel-8.4.0-2.el8jbcs +8
  • RHSA-2023:7623 Released 2023-12-07 · Red Hat rating Moderate
    Red Hat JBoss Web Server 5.7.7 release and security update
    • Red Hat JBoss Web Server 5
Show 2 more Red Hat advisories
  • RHSA-2023:7622 Released 2023-12-07 · Red Hat rating Moderate
    Red Hat JBoss Web Server 5.7.7 release and security update
    • Red Hat JBoss Web Server 5.7 for RHEL 7 Server jws5-tomcat-9.0.62-19.redhat_00017.1.el7jws, jws5-tomcat-admin-webapps-9.0.62-19.redhat_00017.1.el7jws, jws5-tomcat-docs-webapp-9.0.62-19.redhat_00017.1.el7jws +10
    • Red Hat JBoss Web Server 5.7 for RHEL 8 jws5-tomcat-9.0.62-19.redhat_00017.1.el8jws, jws5-tomcat-admin-webapps-9.0.62-19.redhat_00017.1.el8jws, jws5-tomcat-docs-webapp-9.0.62-19.redhat_00017.1.el8jws +8
    • Red Hat JBoss Web Server 5.7 for RHEL 9 jws5-tomcat-9.0.62-19.redhat_00017.1.el9jws, jws5-tomcat-admin-webapps-9.0.62-19.redhat_00017.1.el9jws, jws5-tomcat-docs-webapp-9.0.62-19.redhat_00017.1.el9jws +8
  • RHSA-2023:3722 Released 2023-06-21 · Red Hat rating Moderate
    openssl security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 9) openssl-devel-1:3.0.7-16.el9_2, openssl-perl-1:3.0.7-16.el9_2
    • Red Hat Enterprise Linux BaseOS (v. 9) openssl-1:3.0.7-16.el9_2, openssl-libs-1:3.0.7-16.el9_2

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat JBoss Web Server 3AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:3722
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2023:3722
Red Hat JBoss Core ServicesFixed RHSA-2023:7626
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2023:7625
Red Hat JBoss Core Services on RHEL 8Fixed RHSA-2023:7625
Red Hat JBoss Web Server 5Fixed RHSA-2023:7623
Red Hat JBoss Web Server 5.7 for RHEL 7 ServerFixed RHSA-2023:7622
Red Hat JBoss Web Server 5.7 for RHEL 8Fixed RHSA-2023:7622
Red Hat JBoss Web Server 5.7 for RHEL 9Fixed RHSA-2023:7622
Not affected: 7 products
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat JBoss Core Services on RHEL 7 Server
  • Red Hat JBoss Core Services on RHEL 8
  • Red Hat JBoss Web Server 5.7 for RHEL 7 Server
  • Red Hat JBoss Web Server 5.7 for RHEL 8
  • Red Hat JBoss Web Server 5.7 for RHEL 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-0464
  2. 2026-10-03 Alias added: GHSA-w2w6-xp88-5cvw
  3. 2026-10-09 Fix available: RHSA-2023:7626 · Red Hat
  4. 2026-10-16 EPSS moved to the 90th–95th percentile
  5. 2026-10-16 Fix available: Red Hat JBoss Core Services · Red Hat

References

Patch 4

Advisory 1

Other 5

  • TI-2022-01915 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
  • TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
  • TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
  • TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
  • TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
  • TI-2025-14107 Stack buffer overflow in CMS (Auth)EnvelopedData parsing CVSS 3.1HIGH 8.8
See all 312 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences