Buffer overflow in Microsoft Windows
CVE-2018-1000117
Python Software Foundation CPython version From 3.2 until 3.6.4 on Windows contains a Buffer Overflow vulnerability in os.symlink() function on Windows that can result in Arbitrary code execution, likely escalation of privilege. This attack appears to be exploitable via a python script that creates a symlink with an attacker controlled name or location. This vulnerability appears to have been fixed in 3.7.0 and 3.6.5.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.010 · change: -0.000
Affected products
- Microsoft Windows
- Python — versions 3.7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/python/cpython/pull/5989 (Patch, Issue Tracking, Vendor Advisory)
- bugs.python.org/issue33001 (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2018-1000117?
- CVE-2018-1000117 is a medium-severity vulnerability in Microsoft Windows, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.7/10. Published 2018-03-07.
- How severe is CVE-2018-1000117?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2018-1000117 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.