Keylime: registrar is subject to a dos against ssl connections
Priority MEDIUM 42CWE-400Published · 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
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.
Summary
A flaw was found in Keylime. Due to their blocking nature, the Keylime registrar is subject to a remote denial of service against its SSL connections. This flaw allows an attacker to exhaust all available connections.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01448 73rd percentileScored 2026-11-07
Fix Fixed keylime (PyPI): 7.4.0Red Hat: 1 advisory
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 9 | — | 6.5.2-6.el9_2 | Patch available | CNA |
| — | keylime (PyPI) | before 7.4.0 | 7.4.0 | Patch available | GHSA-pg75-v6fp-8q59 |
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 6.5.2-6.el9_2 Patch available CNA
- keylime (PyPI) Vendor— Affected before 7.4.0 Fixed in 7.4.0 Patch available GHSA-pg75-v6fp-8q59
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:keylime:keylime:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Keylime |
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:* | 9.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* | 9.0_s390x | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:* | 9.2_s390x | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* | 9.0_ppc64le | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:* | 9.0_ppc64le | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:* | 9.2 | Vulnerable | Red Hat |
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | 38 | Vulnerable | Fedoraproject |
- cpe:2.3:a:keylime:keylime:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Keylime
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:* Versions 9.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* Versions 9.0_s390x Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:* Versions 9.2_s390x Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* Versions 9.0_ppc64le Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:* Versions 9.0_ppc64le Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:* Versions 9.2 Vulnerable ·Red Hat
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject
Remediation
- Fix · GHSA-pg75-v6fp-8q59 keylime (PyPI) Fixed in 7.4.0 Advisory →
Red Hat 1 advisory
- RHSA-2023:5080 Released 2023-09-12 · Red Hat rating Moderatekeylime security update
- Red Hat Enterprise Linux AppStream (v. 9) keylime-6.5.2-6.el9_2, keylime-base-6.5.2-6.el9_2, keylime-registrar-6.5.2-6.el9_2 +4
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:5080 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-38200
- 2026-10-03 Alias added: GHSA-pg75-v6fp-8q59
References
Advisory 4
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- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
Sources
- CVE-2023-38200 · CVE Program
- CVE-2023-38200 · NVD
- FIRST EPSS
- GHSA-pg75-v6fp-8q59 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-38200 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences