{
  "cveId": "CVE-2020-36330",
  "url": "https://patchblox.com/security/cve/CVE-2020-36330",
  "summary": "CVE-2020-36330 is fixed in 6 products on 1 platform, first by libwebp6 0.6.1-2ubuntu0.18.04.1, released December 30, 2020. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libwebp: The libwebp packages provide a library and tools for the WebP graphics format",
  "description": "The libwebp packages provide a library and tools for the WebP graphics format. WebP is an image format with a lossy compression of digital photographic images. WebP consists of a codec based on the VP8 format, and a container based on the Resource Interchange File Format (RIFF). Webmasters, web developers and browser developers can use WebP to compress, archive, and distribute digital images more efficiently.\n\nSecurity Fix(es):\n\n* libwebp: out-of-bounds read in WebPMuxCreateInternal (CVE-2018-25009)\n\n* libwebp: out-of-bounds read in ApplyFilter() (CVE-2018-25010)\n\n* libwebp: out-of-bounds read in WebPMuxCreateInternal() (CVE-2018-25012)\n\n* libwebp: out-of-bounds read in ShiftBytes() (CVE-2018-25013)\n\n* libwebp: use of uninitialized value in ReadSymbol() (CVE-2018-25014)\n\n* libwebp: out-of-bounds read in ChunkVerifyAndAssign() in mux/muxread.c (CVE-2020-36330)\n\n* libwebp: out-of-bounds read in ChunkAssignData() in mux/muxinternal.c (CVE-2020-36331)\n\n* libwebp: excessive memory allocation when reading a file (CVE-2020-36332)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.",
  "published": "2020-12-30T16:00:00Z",
  "severity": "Moderate",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.0223,
  "epssPercentile": 0.82859,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libwebp",
      "release": "RHEL 8",
      "fixedVersion": "0:1.0.0-5.el8",
      "fix": "RHSA-2021:4231",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4231",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebp",
      "release": "almalinux 8",
      "fixedVersion": "1.0.0-5.el8",
      "fix": "ALSA-2021:4231",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4231",
      "released": "2021-11-09T08:47:24Z"
    },
    {
      "platform": "linux",
      "product": "libwebp",
      "release": "ol 8",
      "fixedVersion": "0:1.0.0-5.el8",
      "fix": "ELSA-2021-4231",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4231",
      "released": "2021-11-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebp",
      "release": "rocky 8",
      "fixedVersion": "0:1.0.0-5.el8",
      "fix": "RLSA-2021:4231",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2021-4231",
      "released": "2021-11-09T08:47:24Z"
    },
    {
      "platform": "linux",
      "product": "libwebp-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:1.0.0-5.el8",
      "fix": "RHSA-2021:4231",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4231",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebp-devel",
      "release": "almalinux 8",
      "fixedVersion": "1.0.0-5.el8",
      "fix": "ALSA-2021:4231",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4231",
      "released": "2021-11-09T08:47:24Z"
    },
    {
      "platform": "linux",
      "product": "libwebp-devel",
      "release": "ol 8",
      "fixedVersion": "0:1.0.0-5.el8",
      "fix": "ELSA-2021-4231",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4231",
      "released": "2021-11-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebp6",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.6.1-2ubuntu0.18.04.1",
      "fix": "libwebp6 0.6.1-2ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libwebp6-0.6.1-2ubuntu0.18.04.1",
      "released": "2020-12-30T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebp6",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.6.1-2ubuntu0.20.04.1",
      "fix": "libwebp6 0.6.1-2ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libwebp6-0.6.1-2ubuntu0.20.04.1",
      "released": "2020-12-30T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebpdemux2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.6.1-2ubuntu0.18.04.1",
      "fix": "libwebpdemux2 0.6.1-2ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libwebpdemux2-0.6.1-2ubuntu0.18.04.1",
      "released": "2020-12-30T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebpdemux2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.6.1-2ubuntu0.20.04.1",
      "fix": "libwebpdemux2 0.6.1-2ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libwebpdemux2-0.6.1-2ubuntu0.20.04.1",
      "released": "2020-12-30T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebpmux3",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.6.1-2ubuntu0.18.04.1",
      "fix": "libwebpmux3 0.6.1-2ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libwebpmux3-0.6.1-2ubuntu0.18.04.1",
      "released": "2020-12-30T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libwebpmux3",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.6.1-2ubuntu0.20.04.1",
      "fix": "libwebpmux3 0.6.1-2ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libwebpmux3-0.6.1-2ubuntu0.20.04.1",
      "released": "2020-12-30T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "webp",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.6.1-2ubuntu0.18.04.1",
      "fix": "webp 0.6.1-2ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-webp-0.6.1-2ubuntu0.18.04.1",
      "released": "2020-12-30T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "webp",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.6.1-2ubuntu0.20.04.1",
      "fix": "webp 0.6.1-2ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-webp-0.6.1-2ubuntu0.20.04.1",
      "released": "2020-12-30T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}