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Servers and applications

CVE-2017-9798

Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a…

Severity
High 7.5
Published
18 Sept 2017
Last changed
17 Jun 2026
Added to UpHeron
17 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • Version 2.4.27
  • Version 2.4.26
  • Version 2.4.25
  • Version 2.4.23
All 19 release lines
  • Every version up to 2.2.34
  • Version 2.4.0
  • Version 2.4.1
  • Version 2.4.2
  • Version 2.4.3
  • Version 2.4.4
  • Version 2.4.6
  • Version 2.4.7
  • Version 2.4.9
  • Version 2.4.10
  • Version 2.4.12
  • Version 2.4.16
  • Version 2.4.17
  • Version 2.4.18
  • Version 2.4.20
  • Version 2.4.23
  • Version 2.4.25
  • Version 2.4.26
  • Version 2.4.27

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-9798
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-9798