Authenticated code execution via exposed string Formatter
Published Jul 30, 2021 · Updated Aug 3, 2024
Code injection in Zope Foundation AccessControl 4.0 through 4.2 and 5.0 through 5.1 allows remote authenticated users to execute arbitrary Python code. The restricted-code policy exposes string.Formatter, whose overridable formatting hooks provide access to unsafe Python libraries outside the intended sandbox. Exploitation requires Python 3 and permission to add or edit Script (Python) objects through the web, an ability limited to the Manager role by default.
Summary
What happened
Code injection in Zope Foundation AccessControl 4.0 through 4.2 and 5.0 through 5.1 allows remote authenticated users to execute arbitrary Python code. The restricted-code policy exposes string.Formatter, whose overridable formatting hooks provide access to unsafe Python libraries outside the intended sandbox. Exploitation requires Python 3 and permission to add or edit Script (Python) objects through the web, an ability limited to the Manager role by default.
The record
- CVE
- CVE-2021-32807
- Published
- Jul 30, 2021
- Updated
- Aug 3, 2024
- Vendor
- Zope Foundation
- Product
- AccessControl
- Classifications
- CWE-915, CWE-1321, T1059.006
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 30, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 4.0, < 4.3
- Affected versionversion=>= 5.0, < 5.2
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo