GHSA-pjjw-68hj-v9mw
ADVISORY - githubSummary
Impact
Wheel RECORD entries can contain relative paths that traverse outside of the wheel’s installation prefix. In versions 0.11.5 and earlier of uv, these wheels were not rejected on installation and the RECORD was respected without validation on uninstall.
uv uses the RECORD to determine files to remove on uninstall. Consequently, a malicious or malformed wheel could induce deletion of arbitrary files outside of the wheel’s installation prefix on uninstall.
uv does not use the RECORD file to determine wheel file paths. Invalid RECORD entries cannot be used to create or modify files in arbitrary locations.
Standards-compliant Python packaging tooling does not produce RECORD files that exhibit this behavior; an attacker must manually manipulate the RECORD. A user must install and uninstall the malformed wheel to be affected. An attack must guess the depth of the installation prefix path in order to target system files.
Absolute paths in RECORD files are not allowed by the specification and, when present, uv always treats them as rooted in the wheel’s installation prefix. Absolute paths cannot be used to delete arbitrary files.
Only files can be deleted, attempts to delete a directory via an invalid RECORD entry will fail.
Patches
Versions 0.11.6 and newer of uv address the validation gap above, by removing invalid entries from RECORD files on wheel installation and ignoring RECORD paths that would escape the installation prefix on uninstall.
Workarounds
Users are advised to upgrade to 0.11.6 or newer to address this advisory.
Users should experience no breaking changes as a result of the patch above.
Common Weakness Enumeration (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
GitHub
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CVSS SCORE
2.1low| Package | Type | OS Name | OS Version | Affected Ranges | Fix Versions |
|---|---|---|---|---|---|
| uv | pypi | - | - | <=0.11.5 | 0.11.6 |
CVSS:4 Severity and metrics
The CVSS metrics represent different qualitative aspects of a vulnerability that impact the overall score, as defined by the CVSS Specification.
The vulnerable component is bound to the network stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared physical (e.g., Bluetooth or IEEE 802.11) or logical (e.g., local IP subnet) network, or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN to an administrative network zone). One example of an Adjacent attack would be an ARP (IPv4) or neighbor discovery (IPv6) flood leading to a denial of service on the local LAN segment (e.g., CVE-2013-6014).
Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.
The successful attack depends on the presence of specific deployment and execution conditions of the vulnerable system that enable the attack. These include: A race condition must be won to successfully exploit the vulnerability. The successfulness of the attack is conditioned on execution conditions that are not under full control of the attacker. The attack may need to be launched multiple times against a single target before being successful. Network injection. The attacker must inject themselves into the logical network path between the target and the resource requested by the victim (e.g. vulnerabilities requiring an on-path attacker).
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
Successful exploitation of this vulnerability requires a targeted user to perform specific, conscious interactions with the vulnerable system and the attacker's payload, or the user's interactions would actively subvert protection mechanisms which would lead to exploitation of the vulnerability. Examples include: importing a file into a vulnerable system in a specific manner placing files into a specific directory prior to executing code submitting a specific string into a web application (e.g. reflected or self XSS) dismiss or accept prompts or security warnings prior to taking an action (e.g. opening/editing a file, connecting a device).
There is no loss of confidentiality within the Vulnerable System.
There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
There is no impact to availability within the Vulnerable System.
There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.