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BREW-PILLOW-CVE-2020-35653 (CVE-2020-35653)

Vulnerability from osv_homebrew – Published: 2026-08-13 17:28 – Updated: 2026-09-10 20:25 – Source website
VLAI
Details

In Pillow before 8.1.0, PcxDecode has a buffer over-read when decoding a crafted PCX file because the user-supplied stride value is trusted for buffer calculations.

Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "8.1.0"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "pillow",
        "purl": "pkg:brew/pillow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "12.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "git",
    "upstream_evidence": [
      {
        "ecosystem": "GIT",
        "key": "https://github.com/python-pillow/pillow",
        "name": "https://github.com/python-pillow/pillow",
        "strategy": "git",
        "subject_version": "12.3.0"
      },
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/pillow@12.3.0",
        "name": "pillow",
        "strategy": "registry",
        "subject_version": "12.3.0"
      },
      {
        "ecosystem": "Debian",
        "key": "Debian/pillow",
        "name": "pillow",
        "strategy": "distro"
      },
      {
        "ecosystem": "GIT",
        "key": "upstream:https://github.com/python-pillow/pillow",
        "name": "https://github.com/python-pillow/pillow",
        "strategy": "distro",
        "subject_version": "12.3.0"
      },
      {
        "ecosystem": "PyPI",
        "key": "upstream:pkg:pypi/pillow@12.3.0",
        "name": "pillow",
        "strategy": "distro",
        "subject_version": "12.3.0"
      },
      {
        "ecosystem": "Ubuntu",
        "key": "Ubuntu/pillow",
        "name": "pillow",
        "strategy": "distro"
      }
    ]
  },
  "details": "In Pillow before 8.1.0, PcxDecode has a buffer over-read when decoding a crafted PCX file because the user-supplied stride value is trusted for buffer calculations.",
  "id": "BREW-pillow-CVE-2020-35653",
  "modified": "2026-09-10T20:25:15Z",
  "published": "2026-08-13T17:28:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6BYVI5G44MRIPERKYDQEL3S3YQCZTVHE/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BF553AMNNNBW7SH4IM4MNE4M6GNZQ7YD/"
    },
    {
      "type": "ADVISORY",
      "url": "https://pillow.readthedocs.io/en/stable/releasenotes/index.html"
    },
    {
      "type": "ARTICLE",
      "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2020-35653",
    "BIT-pillow-2020-35653",
    "GHSA-f5g8-5qq7-938w",
    "PYSEC-2021-69"
  ]
}



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