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.

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).

Published 2018-04-03 22:29:01

Updated 2019-07-21 12:15:15

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2018-8777

Debian » Debian Linux » Version: 7.0
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 8.0
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux » Version: 6.0
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux » Version: 7.4
cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux » Version: 7.5
cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux » Version: 7.6
cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 14.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
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Canonical » Ubuntu Linux » Version: 16.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 17.10
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
Matching versions
Ruby-lang » Ruby
Versions from including (>=) 2.3.0 and before (<) 2.3.7
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Matching versions
Ruby-lang » Ruby
Versions from including (>=) 2.5.0 and before (<) 2.5.1
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Matching versions
Ruby-lang » Ruby
Versions from including (>=) 2.4.0 and before (<) 2.4.4
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Matching versions
Ruby-lang » Ruby
Versions from including (>=) 2.2.0 and before (<) 2.2.10
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Matching versions
Ruby-lang » Ruby » Version: 2.6.0 Update Preview1
cpe:2.3:a:ruby-lang:ruby:2.6.0:preview1:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2018-8777

Top countries where our scanners detected CVE-2018-8777

Top open port discovered on systems with this issue 53

IPs affected by CVE-2018-8777 132,647

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2018-8777!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2018-8777

EPSS FAQ

1.43%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 80 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-8777

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
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	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2018-8777

CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-8777

https://www.ruby-lang.org/en/news/2018/03/28/large-request-dos-in-webrick-cve-2018-8777/

CVE-2018-8777: DoS by large request in WEBrick
Vendor Advisory
https://access.redhat.com/errata/RHSA-2020:0542

RHSA-2020:0542 - Security Advisory - Red Hat Customer Portal

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html

[SECURITY] [DLA 1358-1] ruby1.9.1 security update
Third Party Advisory

CVEs referencing this url
https://www.debian.org/security/2018/dsa-4259

Debian -- Security Information -- DSA-4259-1 ruby2.3
Third Party Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2018:3731

RHSA-2018:3731 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2018:3729

RHSA-2018:3729 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html

[SECURITY] [DLA 1421-1] ruby2.1 security update
Mailing List;Third Party Advisory

CVEs referencing this url
http://www.securitytracker.com/id/1042004

Apple macOS/OS X Multiple Remote Code Execution, Denial of Service, and Information Disclosure Attacks and Local Privilege Escalation Attacks - SecurityTracker
Third Party Advisory;VDB Entry

CVEs referencing this url
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/

Ruby 2.2.10 Released
Patch;Vendor Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2020:0591

RHSA-2020:0591 - Security Advisory - Red Hat Customer Portal

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2018:3730

RHSA-2018:3730 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
https://usn.ubuntu.com/3685-1/

USN-3685-1: Ruby vulnerabilities | Ubuntu security notices
Third Party Advisory

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html

[security-announce] openSUSE-SU-2019:1771-1: important: Security update

CVEs referencing this url
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/

Ruby 2.3.7 Released
Patch;Vendor Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html

[SECURITY] [DLA 1359-1] ruby1.8 security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2020:0663

RHSA-2020:0663 - Security Advisory - Red Hat Customer Portal

CVEs referencing this url
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/

Ruby 2.5.1 Released
Patch;Vendor Advisory

CVEs referencing this url
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/

Ruby 2.4.4 Released
Patch;Vendor Advisory

CVEs referencing this url
http://www.securityfocus.com/bid/103683

Ruby CVE-2018-8777 Denial of Service Vulnerability
Third Party Advisory;VDB Entry
https://access.redhat.com/errata/RHSA-2019:2028

RHSA-2019:2028 - Security Advisory - Red Hat Customer Portal

CVEs referencing this url