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5.9
CVSSv3

CVE-2016-1546

Published: 06/07/2016 Updated: 07/11/2023
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 5.9 | Impact Score: 3.6 | Exploitability Score: 2.2
VMScore: 384
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
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Vulnerability Summary

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 malicious users to cause a denial of service (stream-processing outage) via modified flow-control windows.

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apache http server 2.4.18

apache http server 2.4.17

Vendor Advisories

Red Hat: Moderate: httpd24-httpd security, bug fix, and enhancement update
Synopsis Moderate: httpd24-httpd security, bug fix, and enhancement update Type/Severity Security Advisory: Moderate Topic Updated httpd24 packages are now available as a part of Red Hat Software Collections 24 for Red Hat Enterprise LinuxRed Hat Product Security has rated this update as having a security ...
Red Hat: CVE-2016-1546
A denial of service flaw was found in httpd's mod_http2 module A remote attacker could use this flaw to block server threads for long times, causing starvation of worker threads, by manipulating the flow control windows on streams ...

References

CWE-399http://httpd.apache.org/security/vulnerabilities_24.htmlhttp://www.apache.org/dist/httpd/CHANGES_2.4http://svn.apache.org/viewvc?view=revision&revision=1733727http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlhttp://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.htmlhttp://www.securityfocus.com/bid/92331https://security.gentoo.org/glsa/201610-02https://access.redhat.com/errata/RHSA-2017:1161https://security.netapp.com/advisory/ntap-20180601-0001/https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b%40%3Ccvs.httpd.apache.org%3Ehttps://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3Ehttps://access.redhat.com/errata/RHSA-2017:1161https://nvd.nist.govhttps://access.redhat.com/security/cve/cve-2016-1546
CVSSv3
CVSSv2
CVSSv3
VMScore
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