{
  "schema_version": "1.7.0",
  "id": "MGASA-2020-0040",
  "published": "2020-01-17T10:16:50Z",
  "modified": "2020-01-17T09:55:22Z",
  "summary": "Updated libjpeg packages fix security vulnerabilities",
  "details": "The updated packages fix security vulnerabilities:\n\nA signed integer overflow and subsequent segfault that occurred when\nattempting to decompress images with more than 715827882 pixels using\nthe 64-bit C version of TJBench.\n\nOut-of-bounds write in tjDecompressToYUV2() and tjDecompressToYUVPlanes()\n(sometimes manifesting as a double free) that occurred when attempting to\ndecompress grayscale JPEG images that were compressed with a sampling\nfactor other than 1 (for instance, with cjpeg -grayscale -sample 2x2).\n\nA regression introduced by 2.0.2[5] that caused the TurboJPEG API to\nincorrectly identify some JPEG images with unusual sampling factors as\n4:4:4 JPEG images. This was known to cause a buffer overflow when\nattempting to decompress some such images using tjDecompressToYUV2()\nor tjDecompressToYUVPlanes().\n\nAn issue, detected by ASan, whereby attempting to losslessly transform\na specially-crafted malformed JPEG image containing an extremely-high-\nfrequency coefficient block (junk image data that could never be\ngenerated by a legitimate JPEG compressor) could cause the Huffman\nencoder's local buffer to be overrun.\n",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2020-0040.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=26057"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libjpeg-turbo/libjpeg-turbo/releases/tag/2.0.4"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:7",
        "name": "libjpeg",
        "purl": "pkg:rpm/mageia/libjpeg?arch=source&distro=mageia-7"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.4-1.mga7"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}