rubygem-rdoc: Command injection vulnerability in RDoc

An operating system command injection flaw was found in RDoc. Using the rdoc command to generate documentation for a malicious Ruby source code could lead to execution of arbitrary commands with the privileges of the user running rdoc...

ruby: Potential HTTP request smuggling in WEBrick

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy which also has a po...

ruby: StartTLS stripping vulnerability in Net::IMAP

Ruby's Net::IMAP module did not raise an exception when receiving an unexpected response to the STARTTLS command and the connection was not upgraded to use TLS. A man-in-the-middle attacker could use this flaw to prevent Ruby applications using Net::IMAP to enable TLS encryption for a connection ...

rubygem-json: Unsafe object creation vulnerability in JSON

A flaw was found in rubygem-json. While parsing certain JSON documents, the json gem including the one bundled with Ruby can be coerced into creating arbitrary objects in the target system. This is the same issue as CVE-2013-0269...

ruby: Regular expression denial of service vulnerability of Date parsing methods

A flaw was found in ruby, where the date object was found to be vulnerable to a regular expression denial of service ReDoS during the parsing of dates. This flaw allows an attacker to hang a ruby application by providing a specially crafted date string. The highest threat to this vulnerability is...

ruby: HTTP response splitting in WEBrick

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients...

ruby: NUL injection vulnerability of File.fnmatch and File.fnmatch?

A flaw was discovered in Ruby in the way certain functions handled strings containing NULL bytes. Specifically, the built-in methods File.fnmatch and its alias File.fnmatch? did not properly handle path patterns containing the NULL byte. A remote attacker could exploit this flaw to make a Ruby...

ruby: Cookie prefix spoofing in CGI::Cookie.parse

A flaw was found in Ruby. RubyGems cgi gem could allow a remote attacker to conduct spoofing attacks caused by the mishandling of security prefixes in cookie names in the CGI::Cookie.parse function. By sending a specially-crafted request, an attacker could perform cookie prefix spoofing attacks...

ruby: Code injection via command argument of Shell#test / Shell#[]

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument aka the "command" argument to Shell or Shelltest in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method...

ruby: BasicSocket#read_nonblock method leads to information disclosure

An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocketreadnonblockrequestedsize, buffer, exception: false, the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous valu...

Important: Red Hat Security Advisory: ruby:2.6 security update

An update for the ruby:2.6 module is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

ruby: FTP PASV command response can cause Net::FTP to connect to arbitrary host

Ruby's Net::FTP module trusted the IP address included in the FTP server's response to the PASV command. A malicious FTP server could use this to make Ruby applications using the Net::FTP module to connect to arbitrary hosts and use this to perform port scanning or information extraction from...

ruby: Regular expression denial of service vulnerability of WEBrick's Digest authentication

WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network...

Important: Red Hat Security Advisory: ruby:2.6 security update

An update for the ruby:2.6 module is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

ruby: NUL injection vulnerability of File.fnmatch and File.fnmatch?

A flaw was discovered in Ruby in the way certain functions handled strings containing NULL bytes. Specifically, the built-in methods File.fnmatch and its alias File.fnmatch? did not properly handle path patterns containing the NULL byte. A remote attacker could exploit this flaw to make a Ruby...

ruby: FTP PASV command response can cause Net::FTP to connect to arbitrary host

Ruby's Net::FTP module trusted the IP address included in the FTP server's response to the PASV command. A malicious FTP server could use this to make Ruby applications using the Net::FTP module to connect to arbitrary hosts and use this to perform port scanning or information extraction from...

ruby: Regular expression denial of service vulnerability of WEBrick's Digest authentication

WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network...

rubygem-json: Unsafe object creation vulnerability in JSON

A flaw was found in rubygem-json. While parsing certain JSON documents, the json gem including the one bundled with Ruby can be coerced into creating arbitrary objects in the target system. This is the same issue as CVE-2013-0269...

ruby: Regular expression denial of service vulnerability of Date parsing methods

A flaw was found in ruby, where the date object was found to be vulnerable to a regular expression denial of service ReDoS during the parsing of dates. This flaw allows an attacker to hang a ruby application by providing a specially crafted date string. The highest threat to this vulnerability is...

ruby: Code injection via command argument of Shell#test / Shell#[]

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument aka the "command" argument to Shell or Shelltest in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method...