USN-3685-2: Ruby regression
First published: Thu Mar 25 2021(Updated: )
USN-3685-1 fixed a vulnerability in Ruby. The fix for CVE-2017-0903 introduced a regression in Ruby. This update fixes the problem. Original advisory details: Some of these CVE were already addressed in previous USN: 3439-1, 3553-1, 3528-1. Here we address for the remain releases. It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to cause a buffer overrun. (CVE-2017-0898) It was discovered that Ruby incorrectly handled certain files. An attacker could use this to overwrite any file on the filesystem. (CVE-2017-0901) It was discovered that Ruby was vulnerable to a DNS hijacking vulnerability. An attacker could use this to possibly force the RubyGems client to download and install gems from a server that the attacker controls. (CVE-2017-0902) It was discovered that Ruby incorrectly handled certain YAML files. An attacker could use this to possibly execute arbitrary code. (CVE-2017-0903) It was discovered that Ruby incorrectly handled certain files. An attacker could use this to expose sensitive information. (CVE-2017-14064) It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to execute arbitrary code. (CVE-2017-10784) It was discovered that Ruby incorrectly handled certain network requests. An attacker could possibly use this to inject a crafted key into a HTTP response. (CVE-2017-17742) It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. This update is only addressed to ruby2.0. (CVE-2018-1000074) It was discovered that Ruby incorrectly handled certain network requests. An attacker could possibly use this to cause a denial of service. (CVE-2018-8777)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/libruby2.0 | <2.0.0.484-1ubuntu2.13+esm1 | 2.0.0.484-1ubuntu2.13+esm1 |
| Ubuntu OpenSSH Client | =14.04 | |
| All of | ||
| ubuntu/ruby2.0 | <2.0.0.484-1ubuntu2.13+esm1 | 2.0.0.484-1ubuntu2.13+esm1 |
| Ubuntu OpenSSH Client | =14.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2017-0903
- https://bugs.launchpad.net/ubuntu/+source/ruby2.0/+bug/1777174
- https://ubuntu.com/security/notices/USN-3553-1
- https://ubuntu.com/security/notices/USN-3685-1
- https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.13+esm1
- https://ubuntu.com/security/notices/USN-3685-2 (Advisory)
Frequently Asked Questions
What is the vulnerability addressed by USN-3685-2?
USN-3685-1 fixed a vulnerability in Ruby.
What was the regression introduced in Ruby?
The fix for CVE-2017-0903 introduced a regression in Ruby.
What is the remedy for libruby2.0 package in Ubuntu 14.04?
The remedy for libruby2.0 package in Ubuntu 14.04 is version 2.0.0.484-1ubuntu2.13+esm1.
What is the remedy for ruby2.0 package in Ubuntu 14.04?
The remedy for ruby2.0 package in Ubuntu 14.04 is version 2.0.0.484-1ubuntu2.13+esm1.
What is the Common Weakness Enumeration (CWE) for this vulnerability?
The Common Weakness Enumeration (CWE) for this vulnerability is CWE-119.
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