#VU35161 Input validation error in Python - CVE-2019-17514
Published: October 12, 2019 / Updated: August 8, 2020
Python
Python.org
Description
The vulnerability allows a remote non-authenticated attacker to manipulate data.
library/glob.html in the Python 2 and 3 documentation before 2016 has potentially misleading information about whether sorting occurs, as demonstrated by irreproducible cancer-research results. NOTE: the effects of this documentation cross application domains, and thus it is likely that security-relevant code elsewhere is affected. This issue is not a Python implementation bug, and there are no reports that NMR researchers were specifically relying on library/glob.html. In other words, because the older documentation stated "finds all the pathnames matching a specified pattern according to the rules used by the Unix shell," one might have incorrectly inferred that the sorting that occurs in a Unix shell also occurred for glob.glob. There is a workaround in newer versions of Willoughby nmr-data_compilation-p2.py and nmr-data_compilation-p3.py, which call sort() directly.
Remediation
External links
- https://bugs.python.org/issue33275
- https://github.com/bminor/bash/blob/ac50fbac377e32b98d2de396f016ea81e8ee9961/pathexp.c#L380
- https://github.com/bminor/bash/blob/ac50fbac377e32b98d2de396f016ea81e8ee9961/pathexp.c#L405
- https://pubs.acs.org/doi/full/10.1021/acs.orglett.9b03216
- https://pubs.acs.org/doi/suppl/10.1021/acs.orglett.9b03216/suppl_file/ol9b03216_si_002.zip
- https://security.netapp.com/advisory/ntap-20191107-0005/
- https://twitter.com/chris_bloke/status/1181997278136958976
- https://twitter.com/LucasCMoore/status/1181615421922824192
- https://usn.ubuntu.com/4428-1/
- https://web.archive.org/web/20150822013622/
- https://docs.python.org/3/library/glob.html
- https://web.archive.org/web/20150906020027/
- https://docs.python.org/2.7/library/glob.html
- https://web.archive.org/web/20160309211341/
- https://web.archive.org/web/20160526201356/
- https://www.vice.com/en_us/article/zmjwda/a-code-glitch-may-have-caused-errors-in-more-than-100-published-studies