Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network…
Priority LOW 38CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-295.
Summary
Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.
Why it matters now
EPSS 0.02545 85th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnupg:gnupg:*:*:*:*:*:*:*:* | up to 2.2.16 | Vulnerable | GnuPG |
| cpe:2.3:a:sks_keyserver_project:sks_keyserver:*:*:*:*:*:*:*:* | up to 1.2.0 | Vulnerable | Sks Keyserver Project |
| cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* | 29 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 30 | Vulnerable | Fedoraproject |
| cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* | 15.0 | Vulnerable | openSUSE |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | openSUSE |
| cpe:2.3:a:f5:traffix_signaling_delivery_controller:*:*:*:*:*:*:*:* | 5.0.0 – 5.1.0 | Vulnerable | F5 |
- cpe:2.3:a:gnupg:gnupg:*:*:*:*:*:*:*:* Versions up to 2.2.16 Vulnerable ·GnuPG
- cpe:2.3:a:sks_keyserver_project:sks_keyserver:*:*:*:*:*:*:*:* Versions up to 1.2.0 Vulnerable ·Sks Keyserver Project
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* Versions 29 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
- cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* Versions 15.0 Vulnerable ·openSUSE
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
- cpe:2.3:a:f5:traffix_signaling_delivery_controller:*:*:*:*:*:*:*:* Versions 5.0.0 – 5.1.0 Vulnerable ·F5
Remediation
Red Hat 1 advisory
- RHSA-2020:4490 Released 2020-11-04 · Red Hat rating Moderategnupg2 security, bug fix, and enhancement update
- Red Hat Enterprise Linux BaseOS (v. 8) gnupg2-2.2.20-2.el8, gnupg2-smime-2.2.20-2.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2020:4490 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-13050
- 2026-10-03 Alias added: GHSA-ch5h-mpfr-fhxh
References
Advisory 6
Other 4
- https://support.f5.com/csp/article/K08654551?utm_source=f5support&%3Butm_medium=RSS
- [mina-dev] 20210225 [jira] [Created] (FTPSERVER-500) Security vulnerability in common/lib/log4j-1.2.17.jar
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8
Sources
- CVE-2019-13050 · CVE Program
- CVE-2019-13050 · NVD
- FIRST EPSS
- GHSA-ch5h-mpfr-fhxh · GitHub Advisory Database · CC BY 4.0
- CVE-2019-13050 · 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