> CVE-2026-45445

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PUBLISHED
2026-06-09 17:17
MODIFIED
2026-06-09 17:17
EPSS (Prob. Exploit)
0.70%
Top 47.2%
DATA SOURCES:
NVD 🔗 2026-06-09 RED HAT 🔗 2026-06-14 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 MSRC 🔗 2026-11-02

> DESCRIPTION

Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() one-shot interface, the application-supplied initialisation vector (IV) is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV supplied by the caller, resulting in (key, nonce) reuse and loss of confidentiality. If the same code path is used to compute the authentication tag, the tag depends only on the (key, IV) pair and not on the plaintext or ciphertext, allowing universal forgery of arbitrary ciphertext from a single captured message. OpenSSL provides two ways to drive a cipher: the documented streaming interface (EVP_CipherUpdate / EVP_CipherFinal_ex) and a lower-level one-shot, EVP_Cipher(), whose documentation explicitly recommends against use by applications in favour of EVP_CipherUpdate() and EVP_CipherFinal_ex(). The OCB provider's streaming handler flushes the application-supplied IV into the OCB context before processing data; the one-shot handler did not. Every call to EVP_Cipher() on an AES-OCB context therefore ran with the all-zero key-derived offset state left by cipher initialisation, regardless of the caller's IV. If EVP_EncryptFinal_ex() is subsequently used to obtain the authentication tag, the deferred IV setup runs at that point and clears the running checksum that should have been accumulated over the plaintext. The resulting tag is a function of (key, IV) only and verifies against any ciphertext produced under the same (key, IV) pair. The OpenSSL SSL/TLS implementation is not affected: AES-OCB is not a TLS cipher suite, and libssl does not call EVP_Cipher() in any case. Applications that drive AES-OCB through the documented streaming AEAD API (EVP_CipherUpdate / EVP_CipherFinal_ex) are not affected. Only applications that combine the AES-OCB cipher with the EVP_Cipher() one-shot API are vulnerable. The FIPS modules in 4.0, 3.6, 3.5, 3.4 and 3.0 are not affected by this issue, as AES-OCB is outside the OpenSSL FIPS module boundary.

> AFFECTED_PRODUCTS

Red Hat - Red Hat Enterprise Linux 10
Version: 3.5.5
Red Hat - Red Hat Enterprise Linux 9
Version: 3.5.5

> WEAKNESSES

CWE-325

> CWE DETAILED DESCRIPTIONS

CWE-325: Missing Cryptographic Step - The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: openssl security update
An update for openssl is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (...
Red Hat Security Advisory: openssl security update
An update for openssl is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: Red Hat Update Infrastructure 5.2 security update
The latest release of Red Hat Update Infrastructure. For more details, see the product documentation.
Red Hat Security Advisory: A Subscription Management tool for finding and reporting Red Hat product usage
A Subscription Management tool for finding and reporting Red Hat product usage
Red Hat Security Advisory: Insights proxy Container Image
Initial GA Release of Red Hat Insights proxy
Red Hat Security Advisory: Cost Management Metrics Operator Update
Cost Management Metrics Operator version 4.4.2 release.
Red Hat Security Advisory: Red Hat Update Infrastructure 5.3 Technology Preview security update
A new set of Red Hat Update Infrastructure container images is now available as a Technology Preview in the Red Hat container registry.
Red Hat Security Advisory: openssl security update
An update for openssl is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vul...
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.20.1
cert-manager Operator for Red Hat OpenShift 1.20.1
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
cert-manager Operator for Red Hat OpenShift 1.18.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
cert-manager Operator for Red Hat OpenShift 1.18.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
cert-manager Operator for Red Hat OpenShift 1.18.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
cert-manager Operator for Red Hat OpenShift 1.17.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
cert-manager Operator for Red Hat OpenShift 1.17.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
cert-manager Operator for Red Hat OpenShift 1.17.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
cert-manager Operator for Red Hat OpenShift 1.18.2
Red Hat Security Advisory: openssl security update
An update for openssl is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vuln...
Red Hat Security Advisory: openssl security update
An update for openssl is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A C...
Red Hat Security Advisory: openssl security update
An update for openssl is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A C...
Red Hat Security Advisory: OpenShift Container Platform 4.18.59 bug fix and security update
Red Hat OpenShift Container Platform release 4.18.59 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (Neuron)
Red Hat AI Base Images 3.5.5 (Neuron) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (Neuron)
Red Hat AI Base Images 3.4.6 (Neuron) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (ROCm 7.14)
Red Hat AI Base Images 3.5.5 (ROCm 7.14) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (Spyre)
Red Hat AI Base Images 3.4.6 (Spyre) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (ROCm 6.4)
Red Hat AI Base Images 3.4.6 (ROCm 6.4) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.0.7 (TPU)
Red Hat AI Base Images 3.0.7 (TPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (Spyre)
Red Hat AI Base Images 3.5.5 (Spyre) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (CPU)
Red Hat AI Base Images 3.4.6 (CPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (CUDA 13.0)
Red Hat AI Base Images 3.5.5 (CUDA 13.0) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (CUDA 12.9)
Red Hat AI Base Images 3.5.5 (CUDA 12.9) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.0.7 (CUDA)
Red Hat AI Base Images 3.0.7 (CUDA) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (CUDA 13.0)
Red Hat AI Base Images 3.4.6 (CUDA 13.0) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (Gaudi)
Red Hat AI Base Images 3.4.6 (Gaudi) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (TPU)
Red Hat AI Base Images 3.4.6 (TPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.0.7 (CPU)
Red Hat AI Base Images 3.0.7 (CPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (Rubin)
Red Hat AI Base Images 3.5.5 (Rubin) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.0.7 (ROCm)
Red Hat AI Base Images 3.0.7 (ROCm) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (CUDA 12.9)
Red Hat AI Base Images 3.4.6 (CUDA 12.9) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.4.6 (ROCm 7.1)
Red Hat AI Base Images 3.4.6 (ROCm 7.1) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (Gaudi)
Red Hat AI Base Images 3.5.5 (Gaudi) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.0.7 (Spyre)
Red Hat AI Base Images 3.0.7 (Spyre) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (CPU)
Red Hat AI Base Images 3.5.5 (CPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.5 (TPU)
Red Hat AI Base Images 3.5.5 (TPU) is now available.
Red Hat Security Advisory: OpenShift Container Platform 4.19.53 bug fix and security update
Red Hat OpenShift Container Platform release 4.19.53 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.21.40 bug fix and security update
Red Hat OpenShift Container Platform release 4.21.40 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: OpenShift Container Platform 4.20.44 bug fix and security update
Red Hat OpenShift Container Platform release 4.20.44 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red H...
Red Hat Security Advisory: Red Hat AI Base Images 3.4.7 (CUDA 13.0)
Red Hat AI Base Images 3.4.7 (CUDA 13.0) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.0.8 (CPU)
Red Hat AI Base Images 3.0.8 (CPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.0.8 (CUDA)
Red Hat AI Base Images 3.0.8 (CUDA) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.6 (CUDA 12.9)
Red Hat AI Base Images 3.5.6 (CUDA 12.9) is now available.

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Moderate

> HISTORIQUE DES MODIFICATIONS

Première apparition
09/06/2026 17:17
Source: NVD
📊 ENRICHISSEMENT 01/07/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-325: Missing Cryptographic Step - The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.
📊 ENRICHISSEMENT 14/06/2026 05:00
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Moderate", "severity_scale": null }
📊 ENRICHISSEMENT 14/06/2026 05:00
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 3 Dernière mise à jour: 4 months ago

> REFERENCES

https://github.com/openssl/security/commit/323f0b6e7d530a4cb4336d50c88cb70f3ac2a...
https://github.com/openssl/security/commit/787a6dfba81b7b09c1e05ab31396c0cd7c36b...
https://github.com/openssl/security/commit/7ac4715234ee72d9f3c93426a2c08554b5b77...
https://github.com/openssl/security/commit/843c9b94ca9c2ed248bb30127bb4f3d7af0d6...
https://github.com/openssl/security/commit/983d54b5cce8d16147548ed1a37892d1720bb...
https://openssl-library.org/news/secadv/20260609.txt
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