FKIE_CVE-2020-15863

Vulnerability from fkie_nvd - Published: 2020-07-28 16:15 - Updated: 2026-06-17 02:57
Severity
5.3 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Summary
hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2020/07/22/1Mailing List, Patch, Third Party Advisory
cve@mitre.orghttps://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=5519724a13664b43e225ca05351c60b4468e4555
cve@mitre.orghttps://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg03497.htmlMailing List, Patch, Third Party Advisory
cve@mitre.orghttps://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg05745.htmlMailing List, Patch, Third Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/202208-27Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/4467-1/Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2020/dsa-4760Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/07/22/1Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=5519724a13664b43e225ca05351c60b4468e4555
af854a3a-2127-422b-91ae-364da2661108https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg03497.htmlMailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg05745.htmlMailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202208-27Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4467-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4760Third Party Advisory
Impacted products
Vendor Product Version
qemu qemu *
qemu qemu 5.1.0
debian debian_linux 10.0
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 20.04
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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      "source": "cve@mitre.org"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555."
    },
    {
      "lang": "es",
      "value": "El archivo hw/net/xgmac.c en el controlador Ethernet XGMAC en QEMU antes del 20/07/2020, presenta un desbordamiento de b\u00fafer. Esto ocurre durante la transmisi\u00f3n de paquetes y afecta a las m\u00e1quinas emuladas highbank y midway. Un usuario o proceso invitado podr\u00eda usar este fallo para bloquear el proceso QEMU en el host, resultando en una denegaci\u00f3n de servicio o una posible ejecuci\u00f3n de c\u00f3digo privilegiado. Esto se corrigi\u00f3 en commit 5519724a13664b43e225ca05351c60b4468e4555"
    }
  ],
  "id": "CVE-2020-15863",
  "lastModified": "2026-06-17T02:57:18.877",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
          "version": "3.1"
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        "impactScore": 3.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2020-07-28T16:15:12.777",
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  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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 confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.