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GHSA-4HM9-844J-JMXP

Vulnerability from github – Published: 2022-05-24 16:49 – Updated: 2026-06-10 13:40
VLAI
Summary
Uninitialized read in Nokogiri gem
Details

In numbers.c in libxslt 1.1.33, an xsl:number with certain format strings could lead to a uninitialized read in xsltNumberFormatInsertNumbers. This could allow an attacker to discern whether a byte on the stack contains the characters A, a, I, i, or 0, or any other character.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "nokogiri"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-13117"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-908"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-09T23:00:36Z",
    "nvd_published_at": "2019-07-01T02:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In numbers.c in libxslt 1.1.33, an xsl:number with certain format strings could lead to a uninitialized read in xsltNumberFormatInsertNumbers. This could allow an attacker to discern whether a byte on the stack contains the characters A, a, I, i, or 0, or any other character.",
  "id": "GHSA-4hm9-844j-jmxp",
  "modified": "2026-06-10T13:40:34Z",
  "published": "2022-05-24T16:49:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13117"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sparklemotion/nokogiri/issues/1943"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4164-1"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20200122-0003"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190806-0004"
    },
    {
      "type": "WEB",
      "url": "https://oss-fuzz.com/testcase-detail/5631739747106816"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IOYJKXPQCUNBMMQJWYXOR6QRUJZHEDRZ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IOYJKXPQCUNBMMQJWYXOR6QRUJZHEDRZ"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00020.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.gnome.org/GNOME/libxslt/commit/c5eb6cf3aba0af048596106ed839b4ae17ecbcb1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2019-13117.yml"
    },
    {
      "type": "WEB",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14471"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00062.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2019/11/17/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Uninitialized read in Nokogiri gem"
}



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