CVE-2018-25032.yml

---
gem: nokogiri
cve: 2018-25032
ghsa: v6gp-9mmm-c6p5
url: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v6gp-9mmm-c6p5
title: Out-of-bounds Write in zlib affects Nokogiri
date: 2022-04-11
description: |
  ## Summary

  Nokogiri v1.13.4 updates the vendored zlib from 1.2.11
  to 1.2.12, which addresses [CVE-2018-25032](https://nvd.nist.gov/vuln/detail/CVE-2018-25032).
  That CVE is scored as CVSS 7.4 "High" on the NVD record as of 2022-04-05.

  Please note that this advisory only applies to the CRuby implementation of
  Nokogiri `< 1.13.4`, and only if the packaged version of `zlib` is being used.
  Please see [this document](https://nokogiri.org/LICENSE-DEPENDENCIES.html#default-platform-release-ruby)
  for a complete description of which platform gems vendor `zlib`. If you've
  overridden defaults at installation time to use system libraries instead of
  packaged libraries, you should instead pay attention to your distro's `zlib`
  release announcements.

  ## Mitigation

  Upgrade to Nokogiri `>= v1.13.4`.

  ## Impact

  ### [CVE-2018-25032](https://nvd.nist.gov/vuln/detail/CVE-2018-25032) in zlib

  - **Severity**: High
  - **Type**: [CWE-787](https://cwe.mitre.org/data/definitions/787.html)
    Out of bounds write
  - **Description**: zlib before 1.2.12 allows memory corruption when
    deflating (i.e., when compressing) if the input has many distant matches.
cvss_v3: 7.5
patched_versions:
  - ">= 1.13.4"
related:
  ghsa:
    - jc36-42cf-vqwj
  url:
    - https://github.com/sparklemotion/nokogiri/releases/tag/v1.13.4
    - https://groups.google.com/g/ruby-security-ann/c/vX7qSjsvWis/m/TJWN4oOKBwAJ