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CVE-2018-8777Date: (C)2018-04-11   (M)2018-08-10


In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption).

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.5CVSS Score : 5.0
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 3.6Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
BID-103683
DSA-4259
USN-3685-1
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://www.ruby-lang.org/en/news/2018/03/28/large-request-dos-in-webrick-cve-2018-8777/
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/

CPE    2
cpe:/o:debian:debian_linux:7.0
cpe:/a:ruby-lang:ruby:2.2.0
CWE    1
CWE-399
OVAL    7
oval:org.secpod.oval:def:1800958
oval:org.secpod.oval:def:114608
oval:org.secpod.oval:def:1800960
oval:org.secpod.oval:def:1800961
...

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