Vulnerability Details : CVE-2018-8777
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).
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2018-8777
Probability of exploitation activity in the next 30 days: 1.21%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 84 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2018-8777
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
[email protected] |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
[email protected] |
CWE ids for CVE-2018-8777
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: [email protected] (Primary)
References for CVE-2018-8777
-
https://www.ruby-lang.org/en/news/2018/03/28/large-request-dos-in-webrick-cve-2018-8777/
Vendor Advisory
- https://access.redhat.com/errata/RHSA-2020:0542
-
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
Third Party Advisory
-
https://www.debian.org/security/2018/dsa-4259
Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3731
Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3729
Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
Mailing List;Third Party Advisory
-
http://www.securitytracker.com/id/1042004
Third Party Advisory;VDB Entry
-
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/
Patch;Vendor Advisory
- https://access.redhat.com/errata/RHSA-2020:0591
-
https://access.redhat.com/errata/RHSA-2018:3730
Third Party Advisory
-
https://usn.ubuntu.com/3685-1/
Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
-
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/
Patch;Vendor Advisory
-
https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html
Mailing List;Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0663
-
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/
Patch;Vendor Advisory
-
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/
Patch;Vendor Advisory
-
http://www.securityfocus.com/bid/103683
Third Party Advisory;VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2028
Products affected by CVE-2018-8777
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.6.0:preview1:*:*:*:*:*:*