| Vulnerability Name: | CVE-2022-31163 (CCN-231973) | ||||||||||||||||||||
| Assigned: | 2022-07-19 | ||||||||||||||||||||
| Published: | 2022-07-19 | ||||||||||||||||||||
| Updated: | 2022-10-26 | ||||||||||||||||||||
| Summary: | 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`. | ||||||||||||||||||||
| CVSS v3 Severity: | 8.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) 7.1 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 7.1 High (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:C/A:C)
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| Vulnerability Type: | CWE-22 CWE-23 | ||||||||||||||||||||
| Vulnerability Consequences: | Obtain Information | ||||||||||||||||||||
| References: | Source: MITRE Type: CNA CVE-2022-31163 Source: XF Type: UNKNOWN tzinfo-cve202231163-dir-traversal(231973) Source: MISC Type: Patch, Third Party Advisory https://github.com/tzinfo/tzinfo/commit/9905ca93abf7bf3e387bd592406e403cd18334c7 Source: MISC Type: Patch, Third Party Advisory https://github.com/tzinfo/tzinfo/commit/9eddbb5c0e682736f61d0dd803b6031a5db9eadf Source: MISC Type: Release Notes, Third Party Advisory https://github.com/tzinfo/tzinfo/releases/tag/v0.3.61 Source: MISC Type: Release Notes, Third Party Advisory https://github.com/tzinfo/tzinfo/releases/tag/v1.2.10 Source: CCN Type: TZInfo GIT Repository Relative path traversal vulnerability allows TZInfo::Timezone.get to load arbitrary files Source: CONFIRM Type: Exploit, Third Party Advisory https://github.com/tzinfo/tzinfo/security/advisories/GHSA-5cm2-9h8c-rvfx Source: MLIST Type: Mailing List, Third Party Advisory [debian-lts-announce] 20220818 [SECURITY] [DLA 3077-1] ruby-tzinfo security update | ||||||||||||||||||||
| Vulnerable Configuration: | Configuration 1: Configuration 2:  Denotes that component is vulnerable | ||||||||||||||||||||
| Oval Definitions | |||||||||||||||||||||
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