ghsa-2cx4-qmrc-3ff4
Vulnerability from github
Published
2022-05-14 03:27
Modified
2025-04-20 03:42
Severity ?
6.5 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Details

The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.

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{
  "affected": [],
  "aliases": [
    "CVE-2017-7890"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-08-02T19:29:00Z",
    "severity": "MODERATE"
  },
  "details": "The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.",
  "id": "GHSA-2cx4-qmrc-3ff4",
  "modified": "2025-04-20T03:42:02Z",
  "published": "2022-05-14T03:27:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7890"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:0406"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:1296"
    },
    {
      "type": "WEB",
      "url": "https://bugs.php.net/bug.php?id=74435"
    },
    {
      "type": "WEB",
      "url": "https://bugs.php.net/patch-display.php?bug=74435\u0026patch=fix-74435-php-7.0\u0026revision=1497970038"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20180112-0001"
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/security/tns-2017-12"
    },
    {
      "type": "WEB",
      "url": "http://php.net/ChangeLog-5.php"
    },
    {
      "type": "WEB",
      "url": "http://php.net/ChangeLog-7.php"
    },
    {
      "type": "WEB",
      "url": "http://www.debian.org/security/2017/dsa-3938"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/99492"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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