CVE-2014-1829
Sensitive Information Disclosure in Python Requests
- CVSS 5.0
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- Information Leakage
- Remote
Requests (aka python-requests) before 2.3.0 allows remote servers to obtain a netrc password by reading the Authorization header in a redirected request.
- CVSS base score
- 5.0
- Published
- 2014-10-15
- OWASP
- A05 Security Misconfiguration
- Orthogonal defect classification
- Interface
- Code defect classification
- Incorrect Interface
- Category
- Information Leakage
- Subcategory
- Insecure Handling of Sensitive Data
- Accessibility scope
- Remote
- Impact
- Information Disclosure
- Fixed by upgrading
- Yes
Solution
Upgrade python-requests to version 2.3.0 or newer.
Vulnerable code sample
import xml.etree.ElementTree as ET
xml_data = """
<!DOCTYPE bomb [
<!ENTITY lol "lol">
<!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
<!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
<!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
<!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
<!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
<!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
<!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
<!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<start>&lol9;</start>
"""
tree = ET.fromstring(xml_data)
print(tree.tag)Patched code sample
import xml.etree.ElementTree as ET
from xml.parsers.expat import ParserCreate
def elementtree_parse(xml_data):
parser = ET.XMLParser(target=ET.TreeBuilder())
parser.parser.UseForeignDTD(False)
parser.entity = {}
return ET.fromstring(xml_data, parser=parser)
xml_data = """
<!DOCTYPE bomb [
<!ENTITY lol "lol">
<!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
<!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
<!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
<!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
<!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
<!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
<!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
<!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<start>&lol9;</start>
"""
tree = elementtree_parse(xml_data)
print(tree.tag)Cite this entry
@misc{vaitp:cve20141829,
title = {{Sensitive Information Disclosure in Python Requests}},
author = {Bogaerts, Fr\'ed\'eric and Ivaki, Naghmeh and Fonseca, Jos\'e},
year = {2014},
note = {VAITP Python Vulnerability Dataset, entry CVE-2014-1829},
howpublished = {\url{https://netpack.pt/vaitp/vulnerability/CVE-2014-1829/}}
}Introducing the "VAITP dataset": a specialized repository of Python vulnerabilities and patches, meticulously compiled for the use of the security research community. As Python's prominence grows, understanding and addressing potential security vulnerabilities become crucial. Crafted by and for the cybersecurity community, this dataset offers a valuable resource for researchers, analysts, and developers to analyze and mitigate the security risks associated with Python. Through the comprehensive exploration of vulnerabilities and corresponding patches, the VAITP dataset fosters a safer and more resilient Python ecosystem, encouraging collaborative advancements in programming security.
The supreme art of war is to subdue the enemy without fighting.
Sun Tzu – “The Art of War”
:: Shaping the future through research and ingenuity ::