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Bug 860075 (CVE-2022-31163) - dev-ruby/tzinfo:1: arbitrary code execution
Summary: dev-ruby/tzinfo:1: arbitrary code execution
Status: RESOLVED INVALID
Alias: CVE-2022-31163
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Security
URL: https://github.com/tzinfo/tzinfo/secu...
Whiteboard: B2 [ebuild]
Keywords:
Depends on:
Blocks:
 
Reported: 2022-07-22 11:51 UTC by John Helmert III
Modified: 2022-07-23 17:07 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-07-22 11:51:28 UTC
CVE-2022-31163:

TZInfo is a Ruby library that provides access to time zone data and allows times to be converted using time zone rules. Versions prior to 0.36.1, as well as those prior to 1.2.10 when used with the Ruby data source tzinfo-data, are vulnerable to relative path traversal. With the Ruby data source, time zones are defined in Ruby files. There is one file per time zone. Time zone files are loaded with `require` on demand. In the affected versions, `TZInfo::Timezone.get` fails to validate time zone identifiers correctly, allowing a new line character within the identifier. With Ruby version 1.9.3 and later, `TZInfo::Timezone.get` can be made to load unintended files with `require`, executing them within the Ruby process. Versions 0.3.61 and 1.2.10 include fixes to correctly validate time zone identifiers. Versions 2.0.0 and later are not vulnerable. Version 0.3.61 can still load arbitrary files from the Ruby load path if their name follows the rules for a valid time zone identifier and the file has a prefix of `tzinfo/definition` within a directory in the load path. Applications should ensure that untrusted files are not placed in a directory on the load path. As a workaround, the time zone identifier can be validated before passing to `TZInfo::Timezone.get` by ensuring it matches the regular expression `\A[A-Za-z0-9+\-_]+(?:\/[A-Za-z0-9+\-_]+)*\z`.

Please bump to 1.2.10.
Comment 1 Hans de Graaff gentoo-dev Security 2022-07-23 07:18:04 UTC
"as well as those prior to 1.2.10 when used with the Ruby data source tzinfo-data"

We don't package tzinfo-data, since we depend on sys-libs/timezone-data instead for better system-wide consistency.

In any case 1.2.10 added.
Comment 2 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-07-23 17:07:20 UTC
Thanks!