high7.5
CVE-2023-38200
Keylime's registrar vulnerable to Denial-of-service attack via a single open connection
Impact
### Impact Keylime `registrar` is prone to a simple denial of service attack in which an adversary opens a connection to the TLS port (by default, port `8891`) blocking further, legitimate connections. As long as the connection is open, the `registrar` is blocked and cannot serve any further clients (`agents` and `tenants`), which prevents normal operation. The problem does not affect the `verifier`. ### Patches Users should upgrade to release 7.4.0
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | keylime | < 7.4.0 | 7.4.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Keylime | Keylime | All versions |
| Redhat | Enterprise Linux | Version 9.0 |
| Redhat | Enterprise Linux Eus | Version 9.2 |
| Redhat | Enterprise Linux For Ibm Z Systems | Version 9.0_s390x |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | Version 9.2_s390x |
| Redhat | Enterprise Linux For Power Little Endian | Version 9.0_ppc64le |
| Redhat | Enterprise Linux For Power Little Endian Eus | Version 9.0_ppc64le |
| Redhat | Enterprise Linux Server Aus | Version 9.2 |
| Fedoraproject | Fedora | Version 38 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://access.redhat.com/errata/RHSA-2023:5080
- https://access.redhat.com/security/cve/CVE-2023-38200
- https://bugzilla.redhat.com/show_bug.cgi?id=2222692
- https://github.com/keylime/keylime/pull/1421
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZIZZB5NHNCS5D2AEH3ZAO6OQC72IK7WS/
- https://github.com/advisories/GHSA-pg75-v6fp-8q59
- https://github.com/keylime/keylime/security/advisories/GHSA-pg75-v6fp-8q59
- https://nvd.nist.gov/vuln/detail/CVE-2023-38200
- https://github.com/keylime/keylime/commit/c68d8f0b7ea549c12b6956ab0f3c28ae0360ae17
- https://github.com/keylime/keylime/releases/tag/v7.4.0