CVE-2020-10933

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 BasicSocket#read_nonblock(requested_size, 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 value of the heap. This may expose possibly sensitive data from the interpreter.

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 BasicSocket#read_nonblock(requested_size, 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 value of the heap. This may expose possibly sensitive data from the interpreter.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

The following packages have been upgraded to a later upstream version: ruby (2.5.9). (BZ#1952626)

Security Fix(es):

• ruby: NUL injection vulnerability of File.fnmatch and File.fnmatch? (CVE-2019-15845)

• ruby: Regular expression denial of service vulnerability of WEBrick's Digest authentication (CVE-2019-16201)

• ruby: Code injection via command argument of Shell#test / Shell#[] (CVE-2019-16255)

• rubygem-json: Unsafe object creation vulnerability in JSON (CVE-2020-10663)

• ruby: BasicSocket#read_nonblock method leads to information disclosure (CVE-2020-10933)

• ruby: Potential HTTP request smuggling in WEBrick (CVE-2020-25613)

• ruby: XML round-trip vulnerability in REXML (CVE-2021-28965)

• ruby: HTTP response splitting in WEBrick (CVE-2019-16254)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

The following packages have been upgraded to a later upstream version: ruby (2.6.7). (BZ#1952627)

Security Fix(es):

• rubygem-bundler: Insecure permissions on directory in /tmp/ allows for execution of malicious code (CVE-2019-3881)

• ruby: NUL injection vulnerability of File.fnmatch and File.fnmatch? (CVE-2019-15845)

• ruby: Regular expression denial of service vulnerability of WEBrick's Digest authentication (CVE-2019-16201)

• ruby: Code injection via command argument of Shell#test / Shell#[] (CVE-2019-16255)

• rubygem-json: Unsafe object creation vulnerability in JSON (CVE-2020-10663)

• ruby: BasicSocket#read_nonblock method leads to information disclosure (CVE-2020-10933)

• ruby: Potential HTTP request smuggling in WEBrick (CVE-2020-25613)

• ruby: XML round-trip vulnerability in REXML (CVE-2021-28965)

• ruby: HTTP response splitting in WEBrick (CVE-2019-16254)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• Resolv::DNS: ruby:2.6/ruby: timeouts if multiple IPv6 name servers are given and address contains leading zero [Rocky Linux-8] (BZ#1954968)

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 BasicSocket#read_nonblock(requested_size, 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 value of the heap. This may expose possibly sensitive data from the interpreter.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

The following packages have been upgraded to a later upstream version: ruby (2.5.9). (BZ#1952626)

Security Fix(es):

• ruby: NUL injection vulnerability of File.fnmatch and File.fnmatch? (CVE-2019-15845)

• ruby: Regular expression denial of service vulnerability of WEBrick's Digest authentication (CVE-2019-16201)

• ruby: Code injection via command argument of Shell#test / Shell#[] (CVE-2019-16255)

• rubygem-json: Unsafe object creation vulnerability in JSON (CVE-2020-10663)

• ruby: BasicSocket#read_nonblock method leads to information disclosure (CVE-2020-10933)

• ruby: Potential HTTP request smuggling in WEBrick (CVE-2020-25613)

• ruby: XML round-trip vulnerability in REXML (CVE-2021-28965)

• ruby: HTTP response splitting in WEBrick (CVE-2019-16254)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

The following packages have been upgraded to a later upstream version: ruby (2.6.7). (BZ#1952627)

Security Fix(es):

• rubygem-bundler: Insecure permissions on directory in /tmp/ allows for execution of malicious code (CVE-2019-3881)

• ruby: NUL injection vulnerability of File.fnmatch and File.fnmatch? (CVE-2019-15845)

• ruby: Regular expression denial of service vulnerability of WEBrick's Digest authentication (CVE-2019-16201)

• ruby: Code injection via command argument of Shell#test / Shell#[] (CVE-2019-16255)

• rubygem-json: Unsafe object creation vulnerability in JSON (CVE-2020-10663)

• ruby: BasicSocket#read_nonblock method leads to information disclosure (CVE-2020-10933)

• ruby: Potential HTTP request smuggling in WEBrick (CVE-2020-25613)

• ruby: XML round-trip vulnerability in REXML (CVE-2021-28965)

• ruby: HTTP response splitting in WEBrick (CVE-2019-16254)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• Resolv::DNS: ruby:2.6/ruby: timeouts if multiple IPv6 name servers are given and address contains leading zero [almalinux-8] (BZ#1954968)

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 BasicSocket#read_nonblock(requested_size, 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 value of the heap. This may expose possibly sensitive data from the interpreter.

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 BasicSocket#read_nonblock(requested_size, 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 value of the heap. This may expose possibly sensitive data from the interpreter.

Updated ruby packages fix security vulnerability:

An issue was discovered in Ruby through 2.5.7. If a victim calls BasicSocket#read_nonblock(requested_size, 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 value of the heap. This may expose possibly sensitive data from the interpreter (CVE-2020-10933).

This update for ruby2.5 to version 2.5.8 fixes the following issues:

• CVE-2020-10663: Unsafe Object Creation Vulnerability in JSON (bsc#1167244).
• CVE-2020-10933: Heap exposure vulnerability in the socket library (bsc#1168938).

This update was imported from the SUSE:SLE-15:Update update project.

These are all security issues fixed in the libruby2_7-2_7-2.7.3-3.2 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the libruby3_0-3_0-3.0.1-3.2 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the libruby3_1-3_1-3.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the libruby3_2-3_2-3.2.1-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the libruby3_3-3_3-3.3.0-1.2 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the libruby3_4-3_4-3.4.1-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the libruby4_0-4_0-4.0.0~preview2-1.1 package on the GA media of openSUSE Tumbleweed.

This update for ruby2.5 to version 2.5.8 fixes the following issues:

• CVE-2020-10663: Unsafe Object Creation Vulnerability in JSON (bsc#1167244).
• CVE-2020-10933: Heap exposure vulnerability in the socket library (bsc#1168938).

It was discovered that the Ruby JSON gem incorrectly handled certain JSON files. If a user or automated system were tricked into parsing a specially crafted JSON file, a remote attacker could use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2020-10663)

It was discovered that Ruby incorrectly handled certain socket memory operations. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-10933)

It was discovered that Ruby incorrectly handled certain transfer-encoding headers when using Webrick. A remote attacker could possibly use this issue to bypass a reverse proxy. (CVE-2020-25613)