eml_parser serves as a python module for parsing eml files and returning various information found in the e-mail as well as computed information. Prior to version 2.0.1, the official example script examples/recursively_extract_attachments.py contains a path traversal vulnerability that allows arbitrary file write outside the intended output directory. Attachment filenames extracted from parsed emails are directly used to construct output file paths without any sanitization, allowing an attacker-controlled filename to escape the target directory.
This issue has been patched in version 2.0.1.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://github.com/GOVCERT-LU/eml_parser/commit/99af03a09a90aaaaadd0ed2ffb5eea4…
security-advisories@github.com
https://github.com/GOVCERT-LU/eml_parser/issues/88
security-advisories@github.com
https://github.com/GOVCERT-LU/eml_parser/security/advisories/GHSA-389r-rccm-h3h5
security-advisories@github.com