CVE-2016-3630: Mercurial arbitrary code execution vulnerability

CVE-2016-3630 · Severity: low · CVSS 3 · Published 2016-04-13

The binary delta decoder in Mercurial before 3.7.3 allows remote attackers to execute arbitrary code via a (1) clone, (2) push, or (3) pull command, related to (a) a list sizing rounding error and (b) short records.

Technologies: mercurial (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2016-3630 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2016-3630 being exploited in the wild.
How severe is CVE-2016-3630?
Low severity, with a CVSS score of 3, published 13 April 2016.
Which products and versions are affected?
mercurial (PyPI) ECOSYSTEM:introduced=0,fixed=3.7.3.
Is there a fix for CVE-2016-3630?
Yes. mercurial (PyPI): upgrade to 3.7.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2016-3630?
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 3.7.3 or later
    pip install "mercurial>=3.7.3"

Affected products

  • mercurial (PyPI) ECOSYSTEM:introduced=0,fixed=3.7.3

Identifiers

  • CVE-2016-3630
  • GHSA-9vjf-jjcq-3gh7
  • PYSEC-2016-29

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