CVE-2018-17983: PYSEC-2018-91 - cext/manifest.c in Mercurial before 4.7.2 has an out-of-bounds read during parsing of a malformed manifest entry.

CVE-2018-17983 · Severity: low · CVSS 3 · Published 2018-10-04

cext/manifest.c in Mercurial before 4.7.2 has an out-of-bounds read during parsing of a malformed manifest entry.

Technologies: mercurial (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2018-17983 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2018-17983 being exploited in the wild.
How severe is CVE-2018-17983?
Low severity, with a CVSS score of 3, published 4 October 2018.
Which products and versions are affected?
mercurial (PyPI) ECOSYSTEM:introduced=0,fixed=4.7.2.
Is there a fix for CVE-2018-17983?
Yes. mercurial (PyPI): upgrade to 4.7.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2018-17983?
Check whether you run mercurial (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • mercurial (PyPI): upgrade to 4.7.2 or later
    pip install "mercurial>=4.7.2"

Affected products

  • mercurial (PyPI) ECOSYSTEM:introduced=0,fixed=4.7.2

Identifiers

  • CVE-2018-17983
  • GHSA-p575-cf9h-wv42
  • PYSEC-2018-91

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