CVE-2021-22890

Published Apr 1, 2021

Last updated 8 months ago

Overview

Description: curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly "short-cut" the host handshake. When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.
Source: support@hackerone.com
NVD status: Analyzed

Hype score: Not currently trending

Risk scores

CVSS 3.1

Type: Primary
Base score: 3.7
Impact score: 1.4
Exploitability score: 2.2
Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Severity: LOW

CVSS 2.0

Type: Primary
Base score: 4.3
Impact score: 2.9
Exploitability score: 8.6
Vector string: AV:N/AC:M/Au:N/C:N/I:P/A:N

Weaknesses

nvd@nist.gov: CWE-290
support@hackerone.com: CWE-300

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "261AE6A4-223F-4131-BB3D-B97EDDBDA37A",
            "versionEndIncluding": "7.75.0",
            "versionStartIncluding": "7.63.0"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956"
          },
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"
          },
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A3C19813-E823-456A-B1CE-EC0684CE1953"
          },
          {
            "criteria": "cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A6E9EF0C-AFA8-4F7B-9FDC-1E0F7C26E737"
          },
          {
            "criteria": "cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "02DEB4FB-A21D-4CB1-B522-EEE5093E8521"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "046FB51E-B768-44D3-AEB5-D857145CA840"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "B0F46497-4AB0-49A7-9453-CC26837BF253",
            "versionEndExcluding": "1.0.1.1"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "E39D442D-1997-49AF-8B02-5640BE2A26CC"
          },
          {
            "criteria": "cpe:2.3:a:oracle:essbase:21.2:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "394A16F2-CCD4-44E5-BF6B-E0C782A9FA38"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "5722E753-75DE-4944-A11B-556CB299B57D",
            "versionEndExcluding": "8.2.12",
            "versionStartIncluding": "8.2.0"
          },
          {
            "criteria": "cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "DC0F9351-81A4-4FEA-B6B5-6E960A933D32",
            "versionEndExcluding": "9.0.6",
            "versionStartIncluding": "9.0.0"
          },
          {
            "criteria": "cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "EED24E67-2957-4C1B-8FEA-E2D2FE7B97FC"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Social media

Risk scores

CVSS 3.1

CVSS 2.0

Weaknesses

Configurations

References