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Improper sanitization of project backups

Moderate
nijel published GHSA-jfgp-674x-6q4p Jul 1, 2024

Package

pip Weblate (pip)

Affected versions

>=4.14,<5.6.2

Patched versions

5.6.2

Description

Impact

Weblate didn't correctly validate filenames when restoring project backup. It may be possible to gain unauthorized access to
files on the server using a crafted ZIP file.

Patches

This issue has been addressed in Weblate 5.6.2 via b6a7eac.

Workarounds

Do not allow project creation to untrusted users.

References

Thanks to Bryan Cahill for bringing this issue to our attention.

For more information

If you have any questions or comments about this advisory:

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
High
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

CVE ID

CVE-2024-39303

Weaknesses

Credits