CVE-2020-9490
HIGHCVSS 7.5/10EPSS 89.74%
Last modified
CVE-2020-9490 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. EPSS estimates a 89.74% chance of exploitation in the next 30 days.
Description
Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Http Server | >= 2.4.20, < 2.4.46 |
| Oracle | Communications Element Manager | >= 8.2.0, <= 8.2.2 |
| Oracle | Communications Session Report Manager | >= 8.2.0, <= 8.2.2 |
| Oracle | Communications Session Route Manager | >= 8.2.0, <= 8.2.2 |
| Oracle | Enterprise Manager Ops Center | 12.4.0.0 |
| Oracle | Hyperion Infrastructure Technology | 11.1.2.4 |
| Oracle | Instantis Enterprisetrack | 17.1 |
| Oracle | Instantis Enterprisetrack | 17.2 |
| Oracle | Instantis Enterprisetrack | 17.3 |
| Oracle | Zfs Storage Appliance Kit | 8.8 |
| Opensuse | Leap | 15.1 |
| Opensuse | Leap | 15.2 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 31 |
| Fedoraproject | Fedora | 32 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 20.04 |
| Redhat | Software Collections | 1.0 |
| Redhat | Openstack | 16.1 |
| Redhat | Openstack For Ibm Power | 16.1 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux Eus | 8.1 |
| Redhat | Enterprise Linux Eus | 8.2 |
| Redhat | Enterprise Linux Eus | 8.4 |
| Redhat | Enterprise Linux Eus | 8.6 |
| Redhat | Enterprise Linux For Ibm Z Systems | 8.0 |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.1 |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.2 |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.4 |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.6 |
| Redhat | Enterprise Linux For Power Little Endian | 8.0 |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.1 |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.2 |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.4 |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.6 |
| Redhat | Enterprise Linux Server Aus | 8.2 |
| Redhat | Enterprise Linux Server Aus | 8.4 |
| Redhat | Enterprise Linux Server Aus | 8.6 |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 8.1 |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 8.2 |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 8.4 |
| Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 8.6 |
| Redhat | Enterprise Linux Server Tus | 8.2 |
| Redhat | Enterprise Linux Server Tus | 8.4 |
| Redhat | Enterprise Linux Server Tus | 8.6 |
| Redhat | Enterprise Linux Server Update Services For Sap Solutions | 8.1 |
| Redhat | Enterprise Linux Server Update Services For Sap Solutions | 8.2 |
| Redhat | Enterprise Linux Server Update Services For Sap Solutions | 8.4 |
| Redhat | Enterprise Linux Server Update Services For Sap Solutions | 8.6 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/160392/Apache-2.4.43-mod_http2-Memory-Corruption.htmlThird Party Advisory, VDB Entry
- https://security.gentoo.org/glsa/202008-04Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200814-0005/Third Party Advisory
- https://usn.ubuntu.com/4458-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4757Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlPatch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/160392/Apache-2.4.43-mod_http2-Memory-Corruption.htmlThird Party Advisory, VDB Entry
- https://security.gentoo.org/glsa/202008-04Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200814-0005/Third Party Advisory
- https://usn.ubuntu.com/4458-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4757Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-9490?
Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.
How severe is CVE-2020-9490?
CVE-2020-9490 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 89.74% probability of exploitation in the next 30 days.
How do I fix CVE-2020-9490?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-9484When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.…7
- CVE-2020-9485An issue was found in Apache Airflow versions 1.10.10 and be…6.1
- CVE-2020-9486In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless executio…7.5
- CVE-2020-9487In Apache NiFi 1.0.0 to 1.11.4, the NiFi download token (one…7.5
- CVE-2020-9488Improper validation of certificate with host mismatch in Apa…3.7
- CVE-2020-9489A carefully crafted or corrupt file may trigger a System.exi…5.5
- CVE-2020-9491In Apache NiFi 1.2.0 to 1.11.4, the NiFi UI and API were pro…7.5
- CVE-2020-9492In Apache Hadoop 3.2.0 to 3.2.1, 3.0.0-alpha1 to 3.1.3, and …8.8
- CVE-2020-9493A deserialization flaw was found in Apache Chainsaw versions…9.8
- CVE-2020-9494Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8…7.5
- CVE-2020-9495Apache Archiva login service before 2.2.5 is vulnerable to L…5.3
- CVE-2020-9496XML-RPC request are vulnerable to unsafe deserialization and…6.1
Are you affected by CVE-2020-9490?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST