fkie_cve-2020-13757
Vulnerability from fkie_nvd
Published
2020-06-01 19:15
Modified
2024-11-21 05:01
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
References
cve@mitre.orghttps://github.com/sybrenstuvel/python-rsa/issues/146Issue Tracking, Third Party Advisory
cve@mitre.orghttps://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667Exploit, Issue Tracking, Third Party Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/
cve@mitre.orghttps://usn.ubuntu.com/4478-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/sybrenstuvel/python-rsa/issues/146Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4478-1/Third Party Advisory
Impacted products
Vendor Product Version
python-rsa_project python-rsa *
fedoraproject fedora 31
fedoraproject fedora 32
canonical ubuntu_linux 14.04


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
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                     matchCriteriaId: "5FF2CAA4-9911-439F-88CC-526D14B768A4",
                     versionEndExcluding: "4.1",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
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                     vulnerable: true,
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                     vulnerable: true,
                  },
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               negate: false,
               operator: "OR",
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         ],
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   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "Python-RSA before 4.1 ignores leading '\\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
      },
      {
         lang: "es",
         value: "Python-RSA versión 4.1, ignora bytes '\\0' principales durante la desencriptación del texto cifrado. Esto podría tener un impacto relevante para la seguridad, por ejemplo, al ayudar a un atacante a inferir que una aplicación utiliza Python-RSA, o si la longitud del texto cifrado aceptado afecta al comportamiento de la aplicación (por ejemplo, al causar una asignación excesiva de memoria)",
      },
   ],
   id: "CVE-2020-13757",
   lastModified: "2024-11-21T05:01:47.397",
   metrics: {
      cvssMetricV2: [
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            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               accessComplexity: "LOW",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "NONE",
               baseScore: 5,
               confidentialityImpact: "PARTIAL",
               integrityImpact: "NONE",
               vectorString: "AV:N/AC:L/Au:N/C:P/I:N/A:N",
               version: "2.0",
            },
            exploitabilityScore: 10,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "NONE",
               baseScore: 7.5,
               baseSeverity: "HIGH",
               confidentialityImpact: "HIGH",
               integrityImpact: "NONE",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
               version: "3.1",
            },
            exploitabilityScore: 3.9,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
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   },
   published: "2020-06-01T19:15:10.067",
   references: [
      {
         source: "cve@mitre.org",
         tags: [
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            "Third Party Advisory",
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         url: "https://github.com/sybrenstuvel/python-rsa/issues/146",
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      },
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      },
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      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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   ],
   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-327",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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