CVE-2016-1546

Description

The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service (stream-processing outage) via modified flow-control windows.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 41.19% Top 5%
Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory apache.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/92331 vdb entry
http://httpd.apache.org/security/vulnerabilities_24.html patch vendor advisory
https://security.gentoo.org/glsa/201610-02 vendor advisory
https://access.redhat.com/errata/RHSA-2017:1161 vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.apache.org/dist/httpd/CHANGES_2.4
http://svn.apache.org/viewvc?view=revision&revision=1733727
http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
https://security.netapp.com/advisory/ntap-20180601-0001/
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E mailing list
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Frequently Asked Questions

What is the severity of CVE-2016-1546?
CVE-2016-1546 has been scored as a medium severity vulnerability.
How to fix CVE-2016-1546?
To fix CVE-2016-1546, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-1546 being actively exploited in the wild?
It is possible that CVE-2016-1546 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~41% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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