Packages
Details
USN-6055-1 fixed a vulnerability in Ruby. Unfortunately it introduced a regression.
This update reverts the patches applied to CVE-2023-28755 in order to fix the regression
pending further investigation.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Ruby incorrectly handled certain regular expressions.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2023-28755)
USN-6055-1 fixed a vulnerability in Ruby. Unfortunately it introduced a regression.
This update reverts the patches applied to CVE-2023-28755 in order to fix the regression
pending further investigation.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Ruby incorrectly handled certain regular expressions.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2023-28755)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 20.04 focal | ruby2.7 – 2.7.0-5ubuntu1.10 | ||
| libruby2.7 – 2.7.0-5ubuntu1.10 | |||
| 18.04 bionic | ruby2.5 – 2.5.1-1ubuntu1.15 | ||
| libruby2.5 – 2.5.1-1ubuntu1.15 | |||
| 16.04 xenial | libruby2.3 – 2.3.1-2~ubuntu16.04.16+esm6 | ||
| ruby2.3 – 2.3.1-2~ubuntu16.04.16+esm6 | |||
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