Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2021-41131 | First vendor Publication | 2021-10-19 |
Vendor | Cve | Last vendor Modification | 2021-10-22 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H | |||
---|---|---|---|
Overall CVSS Score | 8.7 | ||
Base Score | 8.7 | Environmental Score | 8.7 |
impact SubScore | 5.8 | Temporal Score | 8.7 |
Exploitabality Sub Score | 2.2 | ||
Attack Vector | Network | Attack Complexity | High |
Privileges Required | None | User Interaction | None |
Scope | Changed | Confidentiality Impact | None |
Integrity Impact | High | Availability Impact | High |
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:M/Au:N/C:N/I:C/A:C) | |||
---|---|---|---|
Cvss Base Score | 8.8 | Attack Range | Network |
Cvss Impact Score | 9.2 | Attack Complexity | Medium |
Cvss Expoit Score | 8.6 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
python-tuf is a Python reference implementation of The Update Framework (TUF). In both clients (`tuf/client` and `tuf/ngclient`), there is a path traversal vulnerability that in the worst case can overwrite files ending in `.json` anywhere on the client system on a call to `get_one_valid_targetinfo()`. It occurs because the rolename is used to form the filename, and may contain path traversal characters (ie `../../name.json`). The impact is mitigated by a few facts: It only affects implementations that allow arbitrary rolename selection for delegated targets metadata, The attack requires the ability to A) insert new metadata for the path-traversing role and B) get the role delegated by an existing targets metadata, The written file content is heavily restricted since it needs to be a valid, signed targets file. The file extension is always .json. A fix is available in version 0.19 or newer. There are no workarounds that do not require code changes. Clients can restrict the allowed character set for rolenames, or they can store metadata in files named in a way that is not vulnerable: neither of these approaches is possible without modifying python-tuf. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41131 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
Type | Description | Count |
---|---|---|
Application | 1 |
Sources (Detail)
Alert History
Date | Informations |
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2021-10-23 00:22:54 |
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2021-10-20 00:22:50 |
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