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SophosCVE-2021-36809

HistoryMar 08, 2022 - 12:15 a.m.

CVE-2021-36809

2022-03-0800:15:07

Sophos

web.nvd.nist.gov

cve-2021-36809

sophos

ssl vpn client

file overwrite

denial of service

data loss

CVSS2

3.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:N/I:P/A:P

CVSS3

6.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

HIGH

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

AI Score

5.9

Confidence

High

EPSS

Percentile

5.1%

JSON

A local attacker can overwrite arbitrary files on the system with VPN client logs using administrator privileges, potentially resulting in a denial of service and data loss, in all versions of Sophos SSL VPN client.

Affected configurations

Nvd

Node

sophosssl_vpn_clientMatch-windows

VendorProductVersionCPE
sophosssl_vpn_client-cpe:2.3:a:sophos:ssl_vpn_client:-:*:*:*:*:windows:*:*

Vendor	Product	Version	CPE
sophos	ssl_vpn_client	-	cpe:2.3:a:sophos:ssl_vpn_client:-:::::windows::

CNA Affected

[
  {
    "product": "SSL VPN client",
    "vendor": "Sophos",
    "versions": [
      {
        "lessThanOrEqual": "2.3.8.0",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

www.sophos.com/en-us/security-advisories/sophos-sa-20220303-sslvpn-local-dos

CVSS2

3.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:N/I:P/A:P

CVSS3

6.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

HIGH

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

AI Score

5.9

Confidence

High

EPSS

Percentile

5.1%

JSON

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