7.5
CWE
444
Advisory Published
Updated

CVE-2020-9490

First published: Fri Aug 07 2020(Updated: )

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.

Credit: security@apache.org

Affected SoftwareAffected VersionHow to fix
debian/apache2
2.4.62-1~deb11u1
2.4.62-1~deb11u2
2.4.62-1~deb12u2
2.4.63-1
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 Sun ZFS Storage Appliance Kit=8.8
openSUSE=15.1
openSUSE=15.2
Debian=10.0
Fedora=31
Fedora=32
Ubuntu=16.04
Ubuntu=18.04
Ubuntu=20.04
All of
redhat software collections=1.0
Any of
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux=7.6
Red Hat Enterprise Linux=7.7
redhat openstack=16.1
redhat openstack for ibm power=16.1
Red Hat 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
redhat software collections=1.0
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux=7.6
Red Hat Enterprise Linux=7.7

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2020-9490?

    CVE-2020-9490 has a severity level that can cause a crash in affected Apache HTTP Server instances.

  • How do I fix CVE-2020-9490?

    To mitigate CVE-2020-9490, configure the HTTP/2 feature by setting 'H2Push off' in your Apache HTTP Server configuration.

  • Which versions of Apache HTTP Server are affected by CVE-2020-9490?

    Apache HTTP Server versions 2.4.20 to 2.4.43 are impacted by CVE-2020-9490.

  • What are the potential consequences of exploiting CVE-2020-9490?

    Exploiting CVE-2020-9490 can lead to unexpected crashes of the Apache HTTP Server.

  • Is there a permanent patch for CVE-2020-9490?

    While there is no specific patch, applying the mitigation by disabling HTTP/2 push can prevent its exploitation.

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