A ruby2.5 security update has been released for Debian GNU/Linux 10 LTS to address two regular expression Denial of Service (ReDoS) issues.

[SECURITY] [DLA 3447-1] ruby2.5 security update

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Debian LTS Advisory DLA-3447-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Chris Lamb
June 06, 2023 https://wiki.debian.org/LTS
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Package : ruby2.5
Version : 2.5.5-3+deb10u5
CVE IDs : CVE-2023-28755 CVE-2023-28756

Two regular expression Denial of Service (ReDoS) issues were
discovered in Ruby: the first in the URI component, and the second
in the Time module. Each of these issues could have resulted in a
dramatic increase in execution time given malicious input.

For Debian 10 buster, these problems have been fixed in version
2.5.5-3+deb10u5.

We recommend that you upgrade your ruby2.5 packages.

For the detailed security status of ruby2.5 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/ruby2.5

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS