CVE-2014-4650 : The CGIHTTPServer module in Python 2.7.5 and 3.3.4 does not properly handle URLs in which URL encoding is used for path

The CGIHTTPServer module in Python 2.7.5 and 3.3.4 does not properly handle URLs in which URL encoding is used for path separators, which allows remote attackers to read script source code or conduct directory traversal attacks and execute unintended code via a crafted character sequence, as demonstrated by a %2f separator.

Published 2020-02-20 17:15:12

Updated 2022-06-27 16:20:40

Source MITRE

View at NVD, CVE.org

Vulnerability category: Directory traversal

Threat overview for CVE-2014-4650

Top countries where our scanners detected CVE-2014-4650

Top open port discovered on systems with this issue 53

IPs affected by CVE-2014-4650 782,448

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2014-4650!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2014-4650

EPSS FAQ

26.28%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 97 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2014-4650

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2014-4650

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2014-4650

http://bugs.python.org/issue21766

Issue 21766: CGIHTTPServer File Disclosure - Python tracker
Exploit;Patch;Vendor Advisory
http://openwall.com/lists/oss-security/2014/06/26/3

oss-security - Re: CVE ID Request for Python CGIHTTPServer File Disclosure
Mailing List;Third Party Advisory
https://access.redhat.com/security/cve/cve-2014-4650

Red Hat Customer Portal
Third Party Advisory

Products affected by CVE-2014-4650