FKIE_CVE-2022-42898

Vulnerability from fkie_nvd - Published: 2022-12-25 06:15 - Updated: 2026-06-17 05:05
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."
References
cve@mitre.orghttps://bugzilla.samba.org/show_bug.cgi?id=15203Exploit, Issue Tracking, Patch, Third Party Advisory
cve@mitre.orghttps://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3cThird Party Advisory
cve@mitre.orghttps://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583Patch, Third Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/202309-06
cve@mitre.orghttps://security.gentoo.org/glsa/202310-06
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20230216-0008/
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20230223-0001/
cve@mitre.orghttps://web.mit.edu/kerberos/advisories/Vendor Advisory
cve@mitre.orghttps://web.mit.edu/kerberos/krb5-1.19/Release Notes, Vendor Advisory
cve@mitre.orghttps://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txtVendor Advisory
cve@mitre.orghttps://www.samba.org/samba/security/CVE-2022-42898.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.samba.org/show_bug.cgi?id=15203Exploit, Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3cThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202309-06
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202310-06
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20230216-0008/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20230223-0001/
af854a3a-2127-422b-91ae-364da2661108https://web.mit.edu/kerberos/advisories/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://web.mit.edu/kerberos/krb5-1.19/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.samba.org/samba/security/CVE-2022-42898.htmlThird Party Advisory
Impacted products
Vendor Product Version
mit kerberos_5 *
mit kerberos_5 1.20
mit kerberos_5 1.20
heimdal_project heimdal *
samba samba *
samba samba *
samba samba *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
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            },
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has \"a similar bug.\""
    },
    {
      "lang": "es",
      "value": "El an\u00e1lisis sint\u00e1ctico de PAC en MIT Kerberos 5 (tambi\u00e9n conocido como krb5) antes de 1.19.4 y 1.20.x antes de 1.20.1 tiene desbordamientos de enteros que pueden conducir a la ejecuci\u00f3n remota de c\u00f3digo (en KDC, kadmind, o un servidor de aplicaciones GSS o Kerberos) en plataformas de 32 bits (que tienen un desbordamiento de b\u00fafer resultante), y causar una denegaci\u00f3n de servicio en otras plataformas. Esto ocurre en krb5_pac_parse en lib/krb5/krb/pac.c. Heimdal antes de 7.7.1 tiene \"un bug similar\"."
    }
  ],
  "id": "CVE-2022-42898",
  "lastModified": "2026-06-17T05:05:33.057",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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        "ssvcData": {
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          "options": [
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            {
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          "role": "CISA Coordinator",
          "timestamp": "2025-04-14T16:11:12.341307Z",
          "version": "2.0.3"
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  "published": "2022-12-25T06:15:09.427",
  "references": [
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}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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