Path Traversal in Python
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 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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.247 (97.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.247 · newest: 0.247 · change: 0.000
Affected products
- Python
- Red Hat Enterprise Linux — versions 5.0, 6.0, 7.0
- Red Hat Software Collections
Weakness classification (CWE)
Public proof-of-concept exploits
References
- openwall.com/lists/oss-security/2014/06/26/3 (Mailing List, Third Party Advisory)
- bugs.python.org/issue21766 (Exploit, Patch, Vendor Advisory)
- access.redhat.com/security/cve/cve-2014-4650 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2014-4650?
- CVE-2014-4650 is a critical-severity vulnerability in Python, classified under Path Traversal. CVSS score: 9.8/10. Published 2020-02-20.
- How severe is CVE-2014-4650?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2014-4650 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.