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TI-2026-45030 Aliases CVE-2026-63076GHSA-r3hf-pf7x-wgqg

Invalid Pointer Dereference in CMP Server via Crafted protectionAlg

Priority MEDIUM 42CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 15 fixed, 6 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

Issue summary: OpenSSL CMP password based protection verification only checks whether the protectionAlg parameter was not NULL and not its ASN.1 type, before treating it as a PBMParameter. A crafted message can contain a parameter of a different type, which is then dereferenced as an invalid pointer. Impact summary: A remote, unauthenticated attacker can crash an application acting as a CMP server that accepts PBM-protected messages, or a CMP client talking to a malicious or intercepted CMP server, resulting in a Denial of Service. CWE: CWE-476: NULL Pointer Dereference Description: When verifying the password-based MAC protection of a CMP message, OpenSSL library reads the protectionAlg algorithm parameter with X509_ALGOR_get0(), which returns both the parameter type and its value pointer. The value is then cast to an ASN1_STRING and treated as the expected PBMParameter after only checking that pointer is not NULL. The parameter type returned by X509_ALGOR_get0() was never consulted. This happens during protection verification, before any MAC is computed, so no knowledge of the PBM shared secret is required; the only precondition is that PBM verification is reachable. On the server side this is reached from OSSL_CMP_SRV_process_request() for any application that stands up a CMP server accepting PBM-protected messages, and on the client side from CMP response validation against a malicious or on-path (MITM) server. The reliable consequence is a denial of service; there is no memory disclosure, no controlled memory write, and no path to code execution. CMP is a specialized feature that an application must explicitly enable. FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01602 75th percentileScored 2026-11-07
Fix Partial OpenSSL (OpenSSL): 4.0.2, 3.6.4, 3.5.8 +2Red Hat: 19 advisoriesRed Hat: 15 fixed, 6 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
OpenSSLOpenSSL4.0.0 to before 4.0.2; 3.6.0 to before 3.6.4; 3.5.0 to before 3.5.8; 3.4.0 to before 3.4.7; 3.0.0 to before 3.0.224.0.2, 3.6.4, 3.5.8, 3.4.7, 3.0.22Patch availableCNA
  • OpenSSL VendorOpenSSL Affected 4.0.0 to before 4.0.2; 3.6.0 to before 3.6.4; 3.5.0 to before 3.5.8; 3.4.0 to before 3.4.7; 3.0.0 to before 3.0.22 Fixed in 4.0.2, 3.6.4, 3.5.8, 3.4.7, 3.0.22 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*3.0.0 to before 3.0.22; 3.4.0 to before 3.4.7; 3.5.0 to before 3.5.8; 3.6.0 to before 3.6.4; 4.0.0 to before 4.0.2VulnerableOpenSSL
  • cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.0.22; 3.4.0 to before 3.4.7; 3.5.0 to before 3.5.8; 3.6.0 to before 3.6.4; 4.0.0 to before 4.0.2 Vulnerable ·OpenSSL

Remediation

  • Fix · CNA OpenSSL (OpenSSL) Fixed in 4.0.2, 3.6.4, 3.5.8, 3.4.7, 3.0.22

Red Hat 19 advisories

  • RHSA-2026:95346 Released 2026-11-06 · Red Hat rating Critical
    OpenShift Container Platform 4.22.22 bug fix and security update
    • Red Hat OpenShift Container Platform 4.22 rhcos-aarch64-4.22.9.8.202611032353-0, rhcos-ppc64le-4.22.9.8.202611032353-0, rhcos-s390x-4.22.9.8.202611032353-0 +1
  • RHSA-2026:92859 Released 2026-10-29 · Red Hat rating Important
    Satellite 6.17 security update
    • Red Hat Satellite 6.17 for RHEL 9 openvox-agent-8.31.1-1.el9sat, openvox-server-8.17.0-1.el9sat, yggdrasil-worker-forwarder-0.1.1-1.el9sat
  • RHSA-2026:92858 Released 2026-10-29 · Red Hat rating Important
    Satellite 6.16 EUS security update
    • Red Hat Satellite 6.16 for RHEL 8 openvox-agent-8.31.1-1.el8sat, openvox-server-8.17.0-1.el8sat, yggdrasil-worker-forwarder-0.1.1-1.el8sat
    • Red Hat Satellite 6.16 for RHEL 9 openvox-agent-8.31.1-1.el9sat, openvox-server-8.17.0-1.el9sat, yggdrasil-worker-forwarder-0.1.1-1.el9sat
Show 16 more Red Hat advisories
  • RHSA-2026:92860 Released 2026-10-29 · Red Hat rating Important
    Satellite 6.18 security update
    • Red Hat Satellite 6.18 for RHEL 9 openvox-agent-8.31.1-1.el9sat, openvox-server-8.17.0-1.el9sat, yggdrasil-worker-forwarder-0.1.1-1.el9sat
  • RHSA-2026:81201 Released 2026-10-12 · Red Hat rating Important
    Cost Management Metrics Operator Update
    • Cost Management 4 registry.redhat.io/costmanagement/costmanagement-metrics-rhel9-operator
  • RHSA-2026:79357 Released 2026-10-08 · Red Hat rating Important
    Red Hat Cost Management On-Premise container image update
    • Red Hat Cost Management On-Premise 1 registry.redhat.io/costmanagement/costmanagement-ui-rhel10
  • RHSA-2026:79088 Released 2026-10-08 · Red Hat rating Critical
    Red Hat Developer Hub 1.10.5 release.
    • Red Hat Developer Hub 1.10 registry.redhat.io/rhdh/rhdh-hub-rhel9, registry.redhat.io/rhdh/rhdh-rhel9-operator
  • RHSA-2026:72476 Released 2026-09-28 · Red Hat rating Important
    cert-manager Operator for Red Hat OpenShift 1.20.1
    • Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/cert-manager-operator-rhel9
  • RHSA-2026:72475 Released 2026-09-28 · Red Hat rating Important
    cert-manager Operator for Red Hat OpenShift 1.20.1
    • Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9
  • RHSA-2026:72470 Released 2026-09-28 · Red Hat rating Important
    cert-manager Operator for Red Hat OpenShift 1.20.1
    • Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/jetstack-cert-manager-acmesolver-rhel9, registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9
  • RHSA-2026:72399 Released 2026-09-28 · Red Hat rating Important
    cert-manager Operator for Red Hat OpenShift 1.20.1
    • Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/cert-manager-operator-rhel9
  • RHSA-2026:72395 Released 2026-09-28 · Red Hat rating Important
    cert-manager Operator for Red Hat OpenShift 1.20.1
    • Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9
  • RHSA-2026:72394 Released 2026-09-28 · Red Hat rating Important
    cert-manager Operator for Red Hat OpenShift 1.20.1
    • Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9
  • RHSA-2026:71603 Released 2026-09-24 · Red Hat rating Important
    Red Hat Update Infrastructure 5.3 security update
    • Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-kubernetes-rhel9, registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9 +2
  • RHSA-2026:67956 Released 2026-09-16 · Red Hat rating Important
    Red Hat Update Infrastructure 5.3 security update
    • Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-kubernetes-rhel9, registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9 +2
  • RHSA-2026:67165 Released 2026-09-14 · Red Hat rating Important
    openssl security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) openssl-devel-1:3.5.8-1.el9_8, openssl-perl-1:3.5.8-1.el9_8
    • Red Hat Enterprise Linux BaseOS (v. 9) openssl-1:3.5.8-1.el9_8, openssl-libs-1:3.5.8-1.el9_8
  • RHSA-2026:67154 Released 2026-09-14 · Red Hat rating Important
    openssl security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) openssl-devel-1:3.5.8-1.el10_2, openssl-perl-1:3.5.8-1.el10_2
    • Red Hat Enterprise Linux BaseOS (v. 10) openssl-1:3.5.8-1.el10_2, openssl-libs-1:3.5.8-1.el10_2
  • RHSA-2026:59641 Released 2026-08-25 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images openssl-1:3.5.8-0.1.hum1@aarch64, openssl-1:3.5.8-0.1.hum1@src, openssl-1:3.5.8-0.1.hum1@x86_64 +12
  • RHSA-2026:59635 Released 2026-08-25 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images openssl3-1:3.5.8-0.1.hum1@src, openssl3-devel-1:3.5.8-0.1.hum1@aarch64, openssl3-devel-1:3.5.8-0.1.hum1@x86_64 +4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    OpenSSL — openssl-library.org/news/secadv/20260825.txt

    9 records Highest priority Priority MEDIUM 8 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-45027 Untrusted Sender DN Used as Format String in CMP Response ValidationPriority MEDIUM 51
    • TI-2026-53058 AEAD Forgeries with Empty Ciphertext When Using EVP_Cipher()Priority MEDIUM 47
    • TI-2026-15397 QUIC Server May Trigger Double Free When Processing INITIAL PacketPriority MEDIUM 42
    Show all 9 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat JBoss Core ServicesAffectedNo fix planned: Will not fix
Red Hat JBoss Web Server 6AffectedNo fix planned: Will not fix
Red Hat JBoss Web Server 7AffectedNo fix planned: Will not fix
Red Hat OpenShift Container Platform 5AffectedNo fix yet
Red Hat Satellite 6AffectedNo fix yet
Red Hat Satellite ClientAffectedNo fix yet
Cert Manager support for Red Hat OpenShift release 1.20Fixed RHSA-2026:72394, RHSA-2026:72395, RHSA-2026:72399, RHSA-2026:72470, RHSA-2026:72475, RHSA-2026:72476
Cost Management 4Fixed RHSA-2026:81201
Red Hat Cost Management On-Premise 1Fixed RHSA-2026:79357
Red Hat Developer Hub 1.10Fixed RHSA-2026:79088
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:67154
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:67165
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:67154
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:67165
Red Hat Hardened ImagesFixed RHSA-2026:59635, RHSA-2026:59641
Red Hat OpenShift Container Platform 4.22Fixed RHSA-2026:95346
Red Hat Satellite 6.16 for RHEL 8Fixed RHSA-2026:92858
Red Hat Satellite 6.16 for RHEL 9Fixed RHSA-2026:92858
Red Hat Satellite 6.17 for RHEL 9Fixed RHSA-2026:92859
Red Hat Satellite 6.18 for RHEL 9Fixed RHSA-2026:92860
Red Hat Update Infrastructure 5Fixed RHSA-2026:67956, RHSA-2026:71603
Not affected: 17 products
  • Cert Manager support for Red Hat OpenShift release 1.20
  • Cost Management 4
  • Red Hat Developer Hub 1.10
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Hardened Images
  • Red Hat OpenShift AI (RHOAI)
  • Red Hat OpenShift Container Platform 4
  • Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Satellite 6.16 for RHEL 9
  • Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Satellite 6.18 for RHEL 9
  • Red Hat Satellite Client
  • Red Hat Update Infrastructure 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-63076
  2. 2026-10-03 Alias added: GHSA-r3hf-pf7x-wgqg
  3. 2026-10-09 Fix available: RHSA-2026:79088 · Red Hat
  4. 2026-10-09 Fix available: RHSA-2026:79357 · Red Hat
  5. 2026-10-09 Fix available: Red Hat Cost Management On-Premise 1, Red Hat Developer Hub 1.10 · Red Hat
  6. 2026-10-13 Fix available: RHSA-2026:81201 · Red Hat
  7. 2026-10-13 Fix available: Cost Management 4 · Red Hat
  8. 2026-10-21 Affected versions changed · Red Hat
  9. 2026-10-30 Fix available: RHSA-2026:92858 · Red Hat
  10. 2026-10-30 Fix available: RHSA-2026:92859 · Red Hat
  11. 2026-10-30 Fix available: Red Hat Satellite 6.16 for RHEL 8, Red Hat Satellite 6.16 for RHEL 9, Red Hat Satellite 6.17 for RHEL 9 · Red Hat
  12. 2026-10-30 Fix available: RHSA-2026:92860 · Red Hat
  13. 2026-10-30 Fix available: Red Hat Satellite 6.18 for RHEL 9 · Red Hat
  14. 2026-11-06 Affected versions changed · Red Hat
  15. 2026-11-07 Fix available: RHSA-2026:95346 · Red Hat
  16. 2026-11-07 Fix available: Red Hat OpenShift Container Platform 4.22 · Red Hat

References

Patch 5

Advisory 1

  • 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