CVE Tools
Sign in

CVE-2020-9490

Published: Aug 7, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-444
NVD MITRE
7.5CVSSHIGH
EPSS Score
89.7%
Top 0.2%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-444

Affected Products

Apache HTTP Servern/a
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
Instantis EnterpriseTrackOracle Corp.
On-premWeb App
Enterprise Software / itsm-monitoring
OpenSUSE LeapNovell Inc.
On-premOS
Operating Systems / linux-distro
canonical ltd.commercialGBOperating Systemsaka canonical
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
oracle corp.commercialUSDatabasesaka oracle
novell inc.commercialUSOperating Systems
and 38 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-9490
httpd.apache.org
https://security.gentoo.org/glsa/202008-04
security.gentoo.org
https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E
lists.apache.org
and 48 more references View all →

Timeline

Published
Aug 7, 2020
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-9490 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows