[numpy] Numpy missing input validation

The numpy.pad function in Numpy 1.13.1 and older versions is missing input validation. An empty list or ndarray will stick into an infinite loop, which can allow attackers to cause a DoS attack.

References

• https://nvd.nist.gov/vuln/detail/CVE-2017-12852
• https://github.com/numpy/numpy/issues/9560#issuecomment-322395292
• https://github.com/BT123/testcasesForMyRequest/tree/master/CVE-2017-12852
• https://github.com/numpy/numpy/releases/tag/v1.13.3
• https://github.com/advisories/GHSA-frgw-fgh6-9g52