CVE-2018-1000117

MEDIUM

6.7

CVSS Score

Published: March 7, 2018 at 02:00 PM UTC

Updated: June 17, 2026 at 01:32 AM UTC

1 product affected across 1 vendorPython· also runs on 1 platform

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Severity

MEDIUM6.7

Exploit prediction

EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Python · Python

95%

3.2.0 ≤ v < 3.4.93.5.0 ≤ v < 3.5.63.6.0 ≤ v < 3.6.53.7.0 beta1 3.7.0 beta2 3.7.0 beta3 3.7.0 beta4 3.7.0 beta5

Affected range stops below 3.4.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.5.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.6.5, so it looks safe — our inference, not a vendor statement

microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Windows · Microsoft

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory

Source: [email protected]

https://bugs.python.org/issue33001

x_refsource_CONFIRMIssue TrackingPatchVendor Advisory

Source: [email protected]

https://github.com/python/cpython/pull/5989

CVSS

6.7MEDIUM[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-120

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