FKIE_CVE-2020-6831

Vulnerability from fkie_nvd - Published: 2020-05-26 18:15 - Updated: 2026-06-17 03:23
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
References
security@mozilla.orghttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.htmlMailing List, Third Party Advisory
security@mozilla.orghttp://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.htmlThird Party Advisory, VDB Entry
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1632241Permissions Required
security@mozilla.orghttps://security.gentoo.org/glsa/202005-03Patch, Third Party Advisory
security@mozilla.orghttps://security.gentoo.org/glsa/202005-04Third Party Advisory
security@mozilla.orghttps://usn.ubuntu.com/4373-1/Third Party Advisory
security@mozilla.orghttps://www.debian.org/security/2020/dsa-4714Third Party Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-16/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-17/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-18/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.htmlThird Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1632241Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202005-03Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202005-04Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4373-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4714Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-16/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-17/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-18/Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox_esr *
mozilla thunderbird *
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 19.10
canonical ubuntu_linux 20.04
debian debian_linux 9.0
debian debian_linux 10.0
opensuse leap 15.2
To clipboard 

{
  "affected": [
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      "affectedData": [
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          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "68.8",
              "status": "affected",
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              "versionType": "custom"
            }
          ]
        },
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          "vendor": "Mozilla",
          "versions": [
            {
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "68.8.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@mozilla.org"
    }
  ],
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR \u003c 68.8, Firefox \u003c 76, and Thunderbird \u003c 68.8.0."
    },
    {
      "lang": "es",
      "value": "Podr\u00eda presentarse un desbordamiento del b\u00fafer cuando se analizan y comprueban fragmentos SCTP en WebRTC. Esto podr\u00eda haber provocado una corrupci\u00f3n en la memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 68.8, Firefox versiones anteriores a 76 y Thunderbird versiones anteriores a 68.8.0."
    }
  ],
  "id": "CVE-2020-6831",
  "lastModified": "2026-06-17T03:23:53.177",
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        "baseSeverity": "HIGH",
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
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  "published": "2020-05-26T18:15:11.513",
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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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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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.



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