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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
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
89.74%

99.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApacheHttp Server>= 2.4.20, < 2.4.46
OracleCommunications Element Manager>= 8.2.0, <= 8.2.2
OracleCommunications Session Report Manager>= 8.2.0, <= 8.2.2
OracleCommunications Session Route Manager>= 8.2.0, <= 8.2.2
OracleEnterprise Manager Ops Center12.4.0.0
OracleHyperion Infrastructure Technology11.1.2.4
OracleInstantis Enterprisetrack17.1
OracleInstantis Enterprisetrack17.2
OracleInstantis Enterprisetrack17.3
OracleZfs Storage Appliance Kit8.8
OpensuseLeap15.1
OpensuseLeap15.2
DebianDebian Linux10.0
FedoraprojectFedora31
FedoraprojectFedora32
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux20.04
RedhatSoftware Collections1.0
RedhatOpenstack16.1
RedhatOpenstack For Ibm Power16.1
RedhatEnterprise Linux8.0
RedhatEnterprise Linux Eus8.1
RedhatEnterprise Linux Eus8.2
RedhatEnterprise Linux Eus8.4
RedhatEnterprise Linux Eus8.6
RedhatEnterprise Linux For Ibm Z Systems8.0
RedhatEnterprise Linux For Ibm Z Systems Eus8.1
RedhatEnterprise Linux For Ibm Z Systems Eus8.2
RedhatEnterprise Linux For Ibm Z Systems Eus8.4
RedhatEnterprise Linux For Ibm Z Systems Eus8.6
RedhatEnterprise Linux For Power Little Endian8.0
RedhatEnterprise Linux For Power Little Endian Eus8.1
RedhatEnterprise Linux For Power Little Endian Eus8.2
RedhatEnterprise Linux For Power Little Endian Eus8.4
RedhatEnterprise Linux For Power Little Endian Eus8.6
RedhatEnterprise Linux Server Aus8.2
RedhatEnterprise Linux Server Aus8.4
RedhatEnterprise Linux Server Aus8.6
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.1
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.2
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.4
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.6
RedhatEnterprise Linux Server Tus8.2
RedhatEnterprise Linux Server Tus8.4
RedhatEnterprise Linux Server Tus8.6
RedhatEnterprise Linux Server Update Services For Sap Solutions8.1
RedhatEnterprise Linux Server Update Services For Sap Solutions8.2
RedhatEnterprise Linux Server Update Services For Sap Solutions8.4
RedhatEnterprise Linux Server Update Services For Sap Solutions8.6

References

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.

Are you affected by CVE-2020-9490?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST