Vulnerability in petl (CVE-2020-29128)
Summary
Vulnerability in petl (CVE-2020-29128). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
Impact
Information Disclosure
Summary
petl is a Python library that provides functions for extraction, transformation, and loading (ETL) of data.
petl before 1.68, in some configurations, allows resolution of entities in XML input.
An attacker who is able to submit XML input to an application using petl can disclose arbitrary files on the file system in the context of the user under which the application is running.
Affected Applications
Applications that:
- accept attacker-supplied XML input that is processed using petl < 1.68
- return the response generated by petl back to the attacker
- configure lxml as the underlying XML processing library used by petl
- have read privileges in filesystem files with sensitive information
Mitigation
Update to petl >= 1.68
Workarounds
- Assure there is no user/external access to the application using petl
- Assure your application is not using the function fromxml()
References
- https://github.com/nvn1729/advisories/blob/master/cve-2020-29128.md
- https://github.com/petl-developers/petl/pull/527
- https://github.com/petl-developers/petl/releases/tag/v1.6.8
- https://petl.readthedocs.io/en/stable/changes.html
- https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing
For more information
If you have any questions or comme…
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A weakness called CVE-2020-29128 was discovered in petl.
Severity is Info. Low severity or not yet rated.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "petl CVE-2020-29128".
CVE-2020-29128 (petl). Severity: Info.
Response plan:
- Check the vendor advisory for affected versions and the patched release.
- If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
- If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
- Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
PoCs and fix commits: see the 'References' section, MITRE, and NVD.
A weakness (CVE-2020-29128) in petl. A serious software flaw has been identified.
Target versions of petl (see vendor advisory). If running in production, identify exposure immediately.
Severity: Info. Low severity or not yet rated.
Update to the patched release as listed in the vendor advisory.
If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.
Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.
Affected packages
References
- package github.com
- patch github.com
- web github.com
- web github.com
- web petl.readthedocs.io
- web github.com
- web github.com
- web github.com
- web github.com
- web github.com
- web github.com
- web owasp.org