CVE-2018-8777
ruby: DoS by large request in WEBrick
Severity Score
7.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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).
En Ruby, en versiones anteriores a la 2.2.10, versiones 2.3.x anteriores a la 2.3.7, versiones 2.4.x anteriores a la 2.4.4, versiones 2.5.x anteriores a la 2.5.1 y la versión 2.6.0-preview1, un atacante puede pasar una petición HTTP larga con una cabecera manipulada al servidor WEBrick o un cuerpo manipulado al servidor/manipulador WEBrick y provocar una denegación de servicio (consumo de memoria).
It was found that WEBrick could be forced to use an excessive amount of memory during the processing of HTTP requests, leading to a Denial of Service. An attacker could use this flaw to send huge requests to a WEBrick application, resulting in the server running out of memory.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2018-03-19 CVE Reserved
- 2018-03-30 CVE Published
- 2024-07-07 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-400: Uncontrolled Resource Consumption
CAPEC
References (22)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/103683 | Third Party Advisory | |
| http://www.securitytracker.com/id/1042004 | Third Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html | 2019-07-21 | |
| https://access.redhat.com/errata/RHSA-2018:3729 | 2019-07-21 | |
| https://access.redhat.com/errata/RHSA-2018:3730 | 2019-07-21 | |
| https://access.redhat.com/errata/RHSA-2018:3731 | 2019-07-21 | |
| https://access.redhat.com/errata/RHSA-2019:2028 | 2019-07-21 | |
| https://access.redhat.com/errata/RHSA-2020:0542 | 2019-07-21 | |
| https://access.redhat.com/errata/RHSA-2020:0591 | 2019-07-21 | |
| https://access.redhat.com/errata/RHSA-2020:0663 | 2019-07-21 | |
| https://usn.ubuntu.com/3685-1 | 2019-07-21 | |
| https://www.debian.org/security/2018/dsa-4259 | 2019-07-21 | |
| https://www.ruby-lang.org/en/news/2018/03/28/large-request-dos-in-webrick-cve-2018-8777 | 2019-07-21 | |
| https://access.redhat.com/security/cve/CVE-2018-8777 | 2020-03-03 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1561950 | 2020-03-03 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Ruby-lang Search vendor "Ruby-lang" | Ruby Search vendor "Ruby-lang" for product "Ruby" | >= 2.2.0 < 2.2.10 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.2.0 < 2.2.10" | - |
Affected
| ||||||
| Ruby-lang Search vendor "Ruby-lang" | Ruby Search vendor "Ruby-lang" for product "Ruby" | >= 2.3.0 < 2.3.7 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.3.0 < 2.3.7" | - |
Affected
| ||||||
| Ruby-lang Search vendor "Ruby-lang" | Ruby Search vendor "Ruby-lang" for product "Ruby" | >= 2.4.0 < 2.4.4 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.4.0 < 2.4.4" | - |
Affected
| ||||||
| Ruby-lang Search vendor "Ruby-lang" | Ruby Search vendor "Ruby-lang" for product "Ruby" | >= 2.5.0 < 2.5.1 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.5.0 < 2.5.1" | - |
Affected
| ||||||
| Ruby-lang Search vendor "Ruby-lang" | Ruby Search vendor "Ruby-lang" for product "Ruby" | 2.6.0 Search vendor "Ruby-lang" for product "Ruby" and version "2.6.0" | preview1 |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 17.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "17.10" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.4 Search vendor "Redhat" for product "Enterprise Linux" and version "7.4" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.5 Search vendor "Redhat" for product "Enterprise Linux" and version "7.5" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.6 Search vendor "Redhat" for product "Enterprise Linux" and version "7.6" | - |
Affected
| ||||||