FKIE_CVE-2018-18751

Vulnerability from fkie_nvd - Published: 2018-10-29 12:29 - Updated: 2026-06-17 01:47
Severity
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:3643
cve@mitre.orghttps://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefreeExploit, Third Party Advisory
cve@mitre.orghttps://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruptionExploit, Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3815-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3815-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:3643
af854a3a-2127-422b-91ae-364da2661108https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefreeExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruptionExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3815-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3815-2/Third Party Advisory
Impacted products
Vendor Product Version
gnu gettext 0.19.8
canonical ubuntu_linux 12.04
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 18.10
redhat enterprise_linux 7.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en GNU gettext 0.19.8. Hay una doble liberaci\u00f3n (double free) en default_add_message en read-catalog.c, relacionado con una liberaci\u00f3n no v\u00e1lida en po_gram_parse en po-gram-gen.y, tal y como queda demostrado con lt-msgfmt."
    }
  ],
  "id": "CVE-2018-18751",
  "lastModified": "2026-06-17T01:47:49.847",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
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          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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  "published": "2018-10-29T12:29:09.617",
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html"
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  "vulnStatus": "Modified",
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          "lang": "en",
          "value": "CWE-415"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}



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