fkie_cve-2020-27782
Vulnerability from fkie_nvd
Published
2021-02-23 19:15
Modified
2024-11-21 05:21
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1901304Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1901304Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
redhat jboss_fuse 6.0.0
redhat jboss_fuse 7.0.0
redhat openshift_application_runtimes -
redhat undertow 2.0.33
redhat undertow 2.1.5
redhat undertow 2.2.3


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:redhat:jboss_fuse:6.0.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "A305F012-544E-4245-9D69-1C8CD37748B1",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:redhat:jboss_fuse:7.0.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "B40CCE4F-EA2C-453D-BB76-6388767E5C6D",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:redhat:openshift_application_runtimes:-:*:*:*:*:*:*:*",
                     matchCriteriaId: "A33441B3-B301-426C-A976-08CE5FE72EFB",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:redhat:undertow:2.0.33:sp2:*:*:*:*:*:*",
                     matchCriteriaId: "A2CDD487-FEA3-4471-B9F3-A2C24278DBF8",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:redhat:undertow:2.1.5:sp1:*:*:*:*:*:*",
                     matchCriteriaId: "914B537C-9326-49DB-BED4-38203821613D",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:redhat:undertow:2.2.3:sp1:*:*:*:*:*:*",
                     matchCriteriaId: "0022DD37-7025-469C-B855-B38D516D2C9B",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.",
      },
      {
         lang: "es",
         value: "Se encontró un fallo en el conector AJP de Undertow. Peticiones maliciosas y cierres de conexiones abruptas podrían ser desencadenadas por un atacante usando cadenas de consulta con caracteres que no cumplen con RFC, resultando en una denegación de servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema. Esto afecta a Undertow versiones 2.1.5.SP1, 2.0.33.SP2 y 2.2.3.SP1",
      },
   ],
   id: "CVE-2020-27782",
   lastModified: "2024-11-21T05:21:49.550",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "HIGH",
            cvssData: {
               accessComplexity: "LOW",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "COMPLETE",
               baseScore: 7.8,
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               vectorString: "AV:N/AC:L/Au:N/C:N/I:N/A:C",
               version: "2.0",
            },
            exploitabilityScore: 10,
            impactScore: 6.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "HIGH",
               baseScore: 7.5,
               baseSeverity: "HIGH",
               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:H",
               version: "3.1",
            },
            exploitabilityScore: 3.9,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2021-02-23T19:15:13.150",
   references: [
      {
         source: "secalert@redhat.com",
         tags: [
            "Issue Tracking",
            "Vendor Advisory",
         ],
         url: "https://bugzilla.redhat.com/show_bug.cgi?id=1901304",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Issue Tracking",
            "Vendor Advisory",
         ],
         url: "https://bugzilla.redhat.com/show_bug.cgi?id=1901304",
      },
   ],
   sourceIdentifier: "secalert@redhat.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-400",
            },
         ],
         source: "secalert@redhat.com",
         type: "Primary",
      },
   ],
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.