CVE-2026-53939
cjose: OpenIDC/cjose uses all-zero Content Encryption Key for AES-CBC-HMAC JWE encryption
Severidad por fuente
La etiqueta propia de Trivy es CRITICAL. Crítica según Red Hat, AlmaLinux, Oracle, Rocky Linux. Más baja según Amazon (alta).
Descripción
OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm (`A128CBC-HS256`, `A192CBC-HS384`, or `A256CBC-HS512`) together with any key-management algorithm that generates a fresh content-encryption key (CEK), the CEK is all zero bytes instead of being randomly generated. The resulting JWE is therefore encrypted and authenticated under a fixed, publicly known key, so anyone who obtains the JWE can recover the plaintext and forge or modify the content. This is fixed in version 0.6.2.6 by `_cjose_jwe_set_cek_aes_cbc()` generating the CEK from `RAND_bytes`. A regression test asserts that the `encrypted_key` differs across two encryptions for each AES-CBC-HMAC variant. Until upgrading, for data encrypted with cjose, three options are available. Use an AES-GCM `enc` (`A128GCM` / `A192GCM` / `A256GCM`) instead of an AES-CBC-HMAC `enc`, use `alg=dir` with a caller-supplied CEK, or avoid using cjose for JWE encryption with the affected algorithm pair. These are mitigations for new ciphertexts only; data already encrypted under the zero key remains compromised and should be re-encrypted (and any secrets it contained rotated).
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| alma 10 | cjose, cjose-devel | 0.6.2.2-7.el10_2.2 |
| Red Hat | cjose, mod_auth_openidc:2.3::cjose, mod_auth_openidc:2.3::cjose-devel | sin corrección indicada |
| rocky 10 | cjose | 0.6.2.2-7.el10_2.2 |
| amazon linux 2023 | cjose, cjose-debuginfo, cjose-debugsource y 1 más | 0.6.2.2-7.amzn2023 |
| debian 11 | cjose | sin corrección indicada |
| debian 12 | cjose | sin corrección indicada |
| debian 13 | cjose | 0.6.2.3-1+deb13u1 |
| debian 14 | cjose | 0.6.2.7-1 |
| echo | cjose | 0.6.2.3-1+deb13u1 |
| rapidfort alma 10 | cjose, cjose-devel | 0.6.2.2-7.el10_2.2, 0:0.6.2.2-7.el10_0.2 |
| rapidfort alma 9 | cjose | sin corrección indicada |
| rapidfort amazon linux 2023 | cjose, cjose-devel | 0.6.2.2-7.amzn2023 |
Mostrar las 26 entradas de 18 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| alma 10 | cjose | 0.6.2.2-7.el10_2.2 |
| alma 10 | cjose-devel | 0.6.2.2-7.el10_2.2 |
| Red Hat | cjose | sin corrección indicada |
| Red Hat | mod_auth_openidc:2.3::cjose | sin corrección indicada |
| Red Hat | mod_auth_openidc:2.3::cjose-devel | sin corrección indicada |
| rocky 10 | cjose | 0.6.2.2-7.el10_2.2 |
| amazon linux 2023 | cjose | 0.6.2.2-7.amzn2023 |
| amazon linux 2023 | cjose-debuginfo | 0.6.2.2-7.amzn2023 |
| amazon linux 2023 | cjose-debugsource | 0.6.2.2-7.amzn2023 |
| amazon linux 2023 | cjose-devel | 0.6.2.2-7.amzn2023 |
| debian 11 | cjose | sin corrección indicada |
| debian 12 | cjose | sin corrección indicada |
| debian 13 | cjose | 0.6.2.3-1+deb13u1 |
| debian 14 | cjose | 0.6.2.7-1 |
| echo | cjose | 0.6.2.3-1+deb13u1 |
| rapidfort alma 10 | cjose | 0.6.2.2-7.el10_2.2, 0:0.6.2.2-7.el10_0.2 |
| rapidfort alma 10 | cjose-devel | 0.6.2.2-7.el10_2.2, 0:0.6.2.2-7.el10_0.2 |
| rapidfort alma 9 | cjose | sin corrección indicada |
| rapidfort amazon linux 2023 | cjose | 0.6.2.2-7.amzn2023 |
| rapidfort amazon linux 2023 | cjose-devel | 0.6.2.2-7.amzn2023 |
| rapidfort debian 12 | cjose | 0:0.6.2.3-1+deb13u1, 0:0.6.2.7-1 |
| rapidfort debian 13 | cjose | 0:0.6.2.3-1+deb13u1, 0:0.6.2.7-1 |
| rapidfort Oracle Linux 10 | cjose | 0:0.6.2.2-7.el10_2.2 |
| rapidfort Oracle Linux 9 | cjose | sin corrección indicada |
| rapidfort Red Hat 9 | cjose | sin corrección indicada |
| rapidfort rocky 9 | cjose | sin corrección indicada |
Referencias
- https://access.redhat.com/errata/RHSA-2026:80605
- https://access.redhat.com/security/cve/CVE-2026-53939
- https://bugzilla.redhat.com/2530243
- https://bugzilla.redhat.com/show_bug.cgi?id=2530243
- https://creativecommons.org/licenses/by/4.0/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-53939
- https://errata.almalinux.org/10/ALSA-2026-80605.html
- https://errata.rockylinux.org/RLSA-2026:80605
Las 15 referencias
- https://github.com/OpenIDC/cjose/commit/2a6e5bd969fa20059fb00913fb9f57d77ea6a4d9
- https://github.com/OpenIDC/cjose/releases/tag/v0.6.2.6
- https://github.com/OpenIDC/cjose/security/advisories/GHSA-f6wf-pqg3-6wqq
- https://linux.oracle.com/cve/CVE-2026-53939.html
- https://linux.oracle.com/errata/ELSA-2026-80605.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-53939
- https://www.cve.org/CVERecord?id=CVE-2026-53939