8.7 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H
8.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:C/A:C
0.001 Low
EPSS
Percentile
45.2%
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.
CPE | Name | Operator | Version |
---|---|---|---|
python-tuf | eq | 0.9.9 | |
python-tuf | eq | 0.10.0 | |
python-tuf | eq | 0.10.1 | |
python-tuf | eq | 0.11.1 | |
python-tuf | eq | 0.12.0 | |
python-tuf | eq | 0.17.0 | |
python-tuf | eq | 0.9.8 | |
python-tuf | eq | 0.11.0 | |
python-tuf | eq | 0.11.2.dev2 | |
python-tuf | eq | 0.11.2.dev1 |
8.7 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H
8.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:C/A:C
0.001 Low
EPSS
Percentile
45.2%