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GitHub_MCVELIST:CVE-2021-43817

HistoryDec 13, 2021 - 7:45 p.m.

CVE-2021-43817 Reflected Cross-Site-Scripting vulnerability in Collabora Online

2021-12-1319:45:10

CWE-79

GitHub_M

www.cve.org

8.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

NONE

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

8.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

31.3%

JSON

Collabora Online is a collaborative online office suite based on LibreOffice technology. In affected versions a reflected XSS vulnerability was found in Collabora Online. An attacker could inject unescaped HTML into a variable as they created the Collabora Online iframe, and execute scripts inside the context of the Collabora Online iframe. This would give access to a small set of user settings stored in the browser, as well as the session’s authentication token which was also passed in at iframe creation time. Users should upgrade to Collabora Online 6.4.16 or higher or Collabora Online 4.2.20 or higher. Collabora Online Development Edition 21.11 is not affected.

CNA Affected

[
  {
    "product": "online",
    "vendor": "CollaboraOnline",
    "versions": [
      {
        "status": "affected",
        "version": ">= 6.0.0, < 6.4.16"
      },
      {
        "status": "affected",
        "version": "< 4.2.20"
      }
    ]
  }
]

References

github.com/CollaboraOnline/online/security/advisories/GHSA-7f6h-v9mx-58q9

8.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

NONE

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

8.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

31.3%

JSON

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