Upstream information
Description
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).SUSE information
Overall state of this security issue: Revisit
This issue is currently rated as having important severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 9.1 | 7.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | None |
| Availability Impact | None | None |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 8.2 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Attack Requirements | Present |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | High |
| Vulnerable System Integrity Impact | None |
| Vulnerable System Availability Impact | None |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP7 | cjose | Affected |
| SUSE Linux Enterprise Server 16.0 | cjose | Affected |
| SUSE Linux Enterprise Server 16.1 | cjose | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | cjose | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | cjose | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | cjose | Analysis |
| openSUSE Leap 16.0 | cjose | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP5 | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | cjose | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | cjose | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | cjose | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | cjose | Affected |
| SUSE Linux Enterprise Server 12 SP5 | cjose | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP4 | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP5 | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP6 | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | cjose | Affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | cjose | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | cjose | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | cjose | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | cjose | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | cjose | Affected |
| SUSE Enterprise Storage 6 | cjose | Affected |
| SUSE Enterprise Storage 7 | cjose | Affected |
| SUSE Enterprise Storage 7.1 | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | cjose | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | cjose | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | cjose | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | cjose | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | cjose | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | cjose | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | cjose | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | cjose | Affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | cjose | Affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP1 | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP2 | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP3 | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | cjose | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | cjose | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | cjose | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | cjose | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | cjose | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | cjose | Affected |
| SUSE Manager Proxy 4.0 | cjose | Affected |
| SUSE Manager Proxy 4.1 | cjose | Affected |
| SUSE Manager Proxy 4.2 | cjose | Affected |
| SUSE Manager Proxy 4.3 | cjose | Affected |
| SUSE Manager Proxy LTS 4.3 | cjose | Affected |
| SUSE Manager Retail Branch Server 4.0 | cjose | Affected |
| SUSE Manager Retail Branch Server 4.1 | cjose | Affected |
| SUSE Manager Retail Branch Server 4.2 | cjose | Affected |
| SUSE Manager Retail Branch Server 4.3 | cjose | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | cjose | Affected |
| SUSE Manager Server 4.0 | cjose | Affected |
| SUSE Manager Server 4.1 | cjose | Affected |
| SUSE Manager Server 4.2 | cjose | Affected |
| SUSE Manager Server 4.3 | cjose | Affected |
| SUSE Manager Server LTS 4.3 | cjose | Affected |
| SUSE OpenStack Cloud 9 | cjose | Affected |
| SUSE OpenStack Cloud Crowbar 9 | cjose | Affected |
| openSUSE Leap 15.3 | cjose | Affected |
| openSUSE Leap 15.4 | cjose | Affected |
| openSUSE Leap 15.5 | cjose | Affected |
| openSUSE Leap 15.6 | cjose | Affected |
SUSE Timeline for this CVE
CVE page created: Wed Sep 9 12:52:39 2026CVE page last modified: Wed Sep 9 21:53:24 2026