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AUSCERT External Security Bulletin Redistribution
ESB-2023.3917
USN-6219-1: Ruby vulnerabilities
13 July 2023
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AusCERT Security Bulletin Summary
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Product: Ruby
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-36617 CVE-2023-28755
Original Bulletin:
https://ubuntu.com/security/notices/USN-6219-1
Comment: CVSS (Max): 5.3 CVE-2023-36617 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVSS Source: NVD
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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USN-6219-1: Ruby vulnerabilities
12 July 2023
Several security issues were fixed in Ruby.
Releases
o Ubuntu 23.04
o Ubuntu 22.10
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
o Ubuntu 18.04 ESM
o Ubuntu 16.04 ESM
Packages
o ruby2.3 – Object-oriented scripting language
o ruby2.5 – Object-oriented scripting language
o ruby2.7 – Object-oriented scripting language
o ruby3.0 – Interpreter of object-oriented scripting language Ruby
o ruby3.1 – Interpreter of object-oriented scripting language Ruby
Details
It was discovered that Ruby incorrectly handled certain regular expressions.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 20.10 and Ubuntu 20.04 LTS.
( CVE-2023-28755 )
It was discovered that Ruby incorrectly handled certain regular expressions.
An attacker could possibly use this issue to cause a denial of service.
This issue exists because of an incomplete fix for CVE-2023-28755 .
( CVE-2023-36617 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 23.04
o ruby3.1 – 3.1.2-6ubuntu0.23.04.2
o libruby3.1 – 3.1.2-6ubuntu0.23.04.2
Ubuntu 22.10
o ruby3.0 – 3.0.4-7ubuntu0.2
o libruby3.0 – 3.0.4-7ubuntu0.2
Ubuntu 22.04
o ruby3.0 – 3.0.2-7ubuntu2.4
o libruby3.0 – 3.0.2-7ubuntu2.4
Ubuntu 20.04
o ruby2.7 – 2.7.0-5ubuntu1.12
o libruby2.7 – 2.7.0-5ubuntu1.12
Ubuntu 18.04
o ruby2.5 – 2.5.1-1ubuntu1.16+esm1
Available with Ubuntu Pro
o libruby2.5 – 2.5.1-1ubuntu1.16+esm1
Available with Ubuntu Pro
Ubuntu 16.04
o libruby2.3 – 2.3.1-2~ubuntu16.04.16+esm8
Available with Ubuntu Pro
o ruby2.3 – 2.3.1-2~ubuntu16.04.16+esm8
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
o CVE-2023-36617
o CVE-2023-28755
Related notices
o USN-6055-1 : ruby2.3-doc, ruby2.5-doc, libruby2.5, libruby2.7, ruby2.7-doc,
ruby2.5-dev, ruby2.5, ruby2.7-dev, ruby2.3-tcltk, ruby2.7, libruby2.3,
ruby2.3-dev, ruby2.3
o USN-6055-2 : ruby2.3-doc, ruby2.5-doc, libruby2.5, libruby2.7, ruby2.7-doc,
ruby2.5-dev, ruby2.5, ruby2.7-dev, ruby2.3-tcltk, ruby2.7, libruby2.3,
ruby2.3-dev, ruby2.3
o USN-6087-1 : ruby2.3-doc, ruby2.5-doc, libruby2.5, libruby2.7, ruby2.7-doc,
ruby2.5-dev, ruby2.5, ruby2.7-dev, ruby2.3-tcltk, ruby2.7, libruby2.3,
ruby2.3-dev, ruby2.3
o USN-6181-1 : ruby3.1-dev, libruby3.1, ruby3.1, ruby3.1-doc
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