github - ghsa-cx25-8g49-fx7q

GHSA-CX25-8G49-FX7Q

Vulnerability from github – Published: 2022-05-24 17:29 – Updated: 2022-11-16 19:00

Details

In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception.

Severity ?

8.1 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2020-26117"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-09-27T04:15:00Z",
    "severity": "HIGH"
  },
  "details": "In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception.",
  "id": "GHSA-cx25-8g49-fx7q",
  "modified": "2022-11-16T19:00:32Z",
  "published": "2022-05-24T17:29:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26117"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6e"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.opensuse.org/show_bug.cgi?id=1176733"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00007.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00025.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00024.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2020-26117 (GCVE-0-2020-26117)

Vulnerability from cvelistv5 – Published: 2020-09-27 03:30 – Updated: 2024-08-04 15:49

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://github.com/TigerVNC/tigervnc/releases/tag…	x_refsource_MISC
	https://github.com/TigerVNC/tigervnc/commit/f0297…	x_refsource_MISC
	https://github.com/TigerVNC/tigervnc/commit/b30f1…	x_refsource_MISC
	https://github.com/TigerVNC/tigervnc/commit/20dea…	x_refsource_MISC
	https://github.com/TigerVNC/tigervnc/commit/7399e…	x_refsource_MISC
	https://bugzilla.opensuse.org/show_bug.cgi?id=1176733	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
	http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
	http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE

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{
  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:49:07.161Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
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              "x_transferred"
            ],
            "url": "https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0"
          },
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            "tags": [
              "x_refsource_MISC",
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            ],
            "url": "https://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6e"
          },
          {
            "tags": [
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            ],
            "url": "https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba"
          },
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            ],
            "url": "https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb"
          },
          {
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            ],
            "url": "https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b"
          },
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              "x_transferred"
            ],
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          },
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            "tags": [
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              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00007.html"
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        }
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      "providerMetadata": {
        "dateUpdated": "2020-11-06T00:06:20",
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        },
        {
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          "url": "https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b"
        },
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          "url": "https://bugzilla.opensuse.org/show_bug.cgi?id=1176733"
        },
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          "tags": [
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            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00007.html"
        },
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            "x_refsource_SUSE"
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          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00025.html"
        },
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          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00024.html"
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-26117",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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                      }
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                "vendor_name": "n/a"
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        "description": {
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              "value": "In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception."
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        },
        "problemtype": {
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              "description": [
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                  "lang": "eng",
                  "value": "n/a"
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        "references": {
          "reference_data": [
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              "name": "https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0",
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              "url": "https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0"
            },
            {
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              "refsource": "MISC",
              "url": "https://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6e"
            },
            {
              "name": "https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba",
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              "url": "https://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cba"
            },
            {
              "name": "https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb",
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              "url": "https://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cb"
            },
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              "name": "https://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562b",
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            },
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              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00025.html"
            },
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              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00024.html"
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  "cveMetadata": {
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    "assignerShortName": "mitre",
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    "datePublished": "2020-09-27T03:30:25",
    "dateReserved": "2020-09-27T00:00:00",
    "dateUpdated": "2024-08-04T15:49:07.161Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-CX25-8G49-FX7Q

CVE-2020-26117 (GCVE-0-2020-26117)

Tags

Sightings

Nomenclature