CVE-2019-10081: High severity Apache HTTP Server vulnerability
A vulnerability was found in Apache httpd, in modhttp2. Under certain circumstances, HTTP/2 early pushes could lead to memory corruption, causing a server to crash.
Other sources
A vulnerability was found in httpd, where HTTP/2 very early pushes, for example configured with "H2PushResource", could lead to an overwrite of memory in the pushing request's pool, leading to crashes. The memory copied is that of the configured push link header values, not data supplied by the client.
— Red Hat
HTTP/2 (2.4.20 through 2.4.39) very early pushes, for example configured with "H2PushResource", could lead to an overwrite of memory in the pushing request's pool, leading to crashes. The memory copied is that of the configured push link header values, not data supplied by the client.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/jbcs-httpd24-aprto a version that resolves this vulnerability.Fixed in 0:1.6.3-86.jbcs.el6 - Upgrade
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redhat/jbcs-httpd24-brotlito a version that resolves this vulnerability.Fixed in 0:1.0.6-21.jbcs.el6 - Upgrade
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redhat/jbcs-httpd24-httpdto a version that resolves this vulnerability.Fixed in 0:2.4.37-52.jbcs.el6 - Upgrade
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redhat/jbcs-httpd24-opensslto a version that resolves this vulnerability.Fixed in 1:1.1.1c-16.jbcs.el6 - Upgrade
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redhat/jbcs-httpd24-aprto a version that resolves this vulnerability.Fixed in 0:1.6.3-86.jbcs.el7 - Upgrade
Upgrade
redhat/jbcs-httpd24-brotlito a version that resolves this vulnerability.Fixed in 0:1.0.6-21.jbcs.el7 - Upgrade
Upgrade
redhat/jbcs-httpd24-httpdto a version that resolves this vulnerability.Fixed in 0:2.4.37-52.jbcs.el7 - Upgrade
Upgrade
redhat/jbcs-httpd24-opensslto a version that resolves this vulnerability.Fixed in 1:1.1.1c-16.jbcs.el7 - Upgrade
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debian/apache2to a version that resolves this vulnerability.Fixed in 2.4.62-1~deb11u1Fixed in 2.4.66-1~deb11u1Fixed in 2.4.66-1~deb12u1Fixed in 2.4.62-1~deb12u2Fixed in 2.4.66-1~deb13u2Fixed in 2.4.66-8 - Upgrade
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redhat/httpdto a version that resolves this vulnerability.Fixed in 2.4.41 - Configuration
Set the H2Push directive to off to disable HTTP/2 push on unpatched servers.
Apache httpd mod_http2 H2Push = off
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is the severity of CVE-2019-10081?
The severity of CVE-2019-10081 is medium.
How does CVE-2019-10081 affect Apache httpd?
CVE-2019-10081 affects Apache httpd versions 2.4.20 through 2.4.39.
How can CVE-2019-10081 be fixed?
To fix CVE-2019-10081, update Apache httpd to version 2.4.41 or higher.
What is the impact of CVE-2019-10081?
The impact of CVE-2019-10081 is memory overwrite and potential crashes in Apache httpd.
Is there any additional information available for CVE-2019-10081?
Yes, you can refer to the following links for additional information: [Bugzilla Red Hat - ID 1743967](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1743967), [Bugzilla Red Hat - ID 1743968](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1743968), [Bugzilla Red Hat - ID 1743969](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1743969).