fkie_cve-2020-7957
Vulnerability from fkie_nvd
Published
2020-02-12 17:15
Modified
2024-11-21 05:38
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.
References
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2020/02/12/2Exploit, Mailing List, Third Party Advisory
cve@mitre.orghttps://dovecot.org/pipermail/dovecot-news/2020-February/000430.htmlExploit, Mailing List, Vendor Advisory
cve@mitre.orghttps://dovecot.org/securityVendor Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/02/12/2Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://dovecot.org/pipermail/dovecot-news/2020-February/000430.htmlExploit, Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://dovecot.org/securityVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/
Impacted products
Vendor Product Version
dovecot dovecot *
fedoraproject fedora 30
fedoraproject fedora 31


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "B0CB6EFB-63A3-4B07-8B44-3EB087307500",
                     versionEndExcluding: "2.3.9.3",
                     versionStartIncluding: "2.3.9",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
                     matchCriteriaId: "97A4B8DF-58DA-4AB6-A1F9-331B36409BA3",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
                     matchCriteriaId: "80F0FA5D-8D3B-4C0E-81E2-87998286AF33",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.",
      },
      {
         lang: "es",
         value: "Los plugins IMAP y LMTP en Dovecot versiones 2.3.9 anteriores a 2.3.9.3, manejan inapropiadamente la generación de fragmentos cuando se deben leer muchos caracteres para calcular el fragmento y existe un carácter ) al final. Esto provoca una denegación de servicio en la que el destinatario no puede leer todos sus mensajes.",
      },
   ],
   id: "CVE-2020-7957",
   lastModified: "2024-11-21T05:38:05.377",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               accessComplexity: "LOW",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "PARTIAL",
               baseScore: 5,
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               vectorString: "AV:N/AC:L/Au:N/C:N/I:N/A:P",
               version: "2.0",
            },
            exploitabilityScore: 10,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV30: [
         {
            cvssData: {
               attackComplexity: "HIGH",
               attackVector: "NETWORK",
               availabilityImpact: "LOW",
               baseScore: 3.1,
               baseSeverity: "LOW",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "REQUIRED",
               vectorString: "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L",
               version: "3.0",
            },
            exploitabilityScore: 1.6,
            impactScore: 1.4,
            source: "cve@mitre.org",
            type: "Secondary",
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "LOW",
               baseScore: 5.3,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
               version: "3.1",
            },
            exploitabilityScore: 3.9,
            impactScore: 1.4,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2020-02-12T17:15:12.563",
   references: [
      {
         source: "cve@mitre.org",
         tags: [
            "Exploit",
            "Mailing List",
            "Third Party Advisory",
         ],
         url: "http://www.openwall.com/lists/oss-security/2020/02/12/2",
      },
      {
         source: "cve@mitre.org",
         tags: [
            "Exploit",
            "Mailing List",
            "Vendor Advisory",
         ],
         url: "https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html",
      },
      {
         source: "cve@mitre.org",
         tags: [
            "Vendor Advisory",
         ],
         url: "https://dovecot.org/security",
      },
      {
         source: "cve@mitre.org",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/",
      },
      {
         source: "cve@mitre.org",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Exploit",
            "Mailing List",
            "Third Party Advisory",
         ],
         url: "http://www.openwall.com/lists/oss-security/2020/02/12/2",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Exploit",
            "Mailing List",
            "Vendor Advisory",
         ],
         url: "https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Vendor Advisory",
         ],
         url: "https://dovecot.org/security",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/",
      },
   ],
   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-20",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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