CVE-2018-8779
ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket
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, the UNIXServer.open and UNIXSocket.open methods are not checked for null characters. It may be connected to an unintended socket.
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, los métodos UNIXServer.open y UNIXSocket.open no se comprueban en busca de caracteres null. Podría estar relacionado con un socket no planeado.
It was found that the UNIXSocket::open and UNIXServer::open ruby methods did not handle the NULL byte properly. An attacker, able to inject NULL bytes in the socket path, could possibly trigger an unspecified behavior of the ruby script.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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-20: Improper Input Validation
- CWE-626: Null Byte Interaction Error (Poison Null Byte)
CAPEC
References (19)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/103767 | 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://usn.ubuntu.com/3626-1 | 2019-07-21 | |
| https://www.debian.org/security/2018/dsa-4259 | 2019-07-21 | |
| https://www.ruby-lang.org/en/news/2018/03/28/poisoned-nul-byte-unixsocket-cve-2018-8779 | 2019-07-21 | |
| https://access.redhat.com/security/cve/CVE-2018-8779 | 2019-08-06 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1561948 | 2019-08-06 |
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
| ||||||
| 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
| ||||||
| 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
| ||||||