ELA-495-1 ruby2.1 security update
Package ruby2.1
ELA-495-1 ruby2.1 security update
Version 2.1.5-2+deb8u12
Related CVEs CVE-2021-31799 CVE-2021-31810 CVE-2021-32066
Multiple vulnerabilites in ruby2.1, interpreter of object-oriented scripting language Ruby, were discovered.
CVE-2021-31799
In RDoc 3.11 through 6.x before 6.3.1, as distributed with
Ruby through 2.1.5, it is possible to execute arbitrary
code via | and tags in a filename.
CVE-2021-31810
An issue was discovered in Ruby through 2.1.5. A malicious
FTP server can use the PASV response to trick Net::FTP into
connecting back to a given IP address and port. This
potentially makes curl extract information about services
that are otherwise private and not disclosed (e.g., the
attacker can conduct port scans and service banner extractions).
CVE-2021-32066
An issue was discovered in Ruby through 2.1.5. Net::IMAP does
not raise an exception when StartTLS fails with an an unknown
response, which might allow man-in-the-middle attackers to
bypass the TLS protections by leveraging a network position
between the client and the registry to block the StartTLS
command, aka a "StartTLS stripping attack."
For Debian 8 jessie, these problems have been fixed in version 2.1.5-2+deb8u12.
We recommend that you upgrade your ruby2.1 packages.
Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/
A ruby2.1 security update has been released for Debian GNU/Linux 8 Extended LTS to address multiple vulnerabilites.
