Vulnerability Name:

CVE-2021-25269 (CCN-214127)

Assigned:2021-11-26
Published:2021-11-26
Updated:2021-12-03
Summary:A local administrator could prevent the HMPA service from starting despite tamper protection using an unquoted service path vulnerability in the HMPA component of Sophos Intercept X Advanced and Sophos Intercept X Advanced for Server before version 2.0.23, as well as Sophos Exploit Prevention before version 3.8.3.
CVSS v3 Severity:4.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)
3.9 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
4.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)
3.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-428
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-25269

Source: XF
Type: UNKNOWN
sophos-cve202125269-dos(214127)

Source: CCN
Type: Sophos Web site
Resolved HMPA Service Local DoS (CVE-2021-25269)

Source: CONFIRM
Type: Vendor Advisory
https://www.sophos.com/en-us/security-advisories/sophos-sa-20211126-ixa-hmpa-local-dos

Vulnerable Configuration:Configuration 1:
  • cpe:/a:sophos:exploit_prevention:*:*:*:*:*:*:*:* (Version < 3.8.3)
  • OR cpe:/a:sophos:intercept_x_endpoint:*:*:*:*:*:*:*:* (Version < 2.0.23)
  • OR cpe:/a:sophos:intercept_x_for_server:*:*:*:*:*:*:*:* (Version < 2.0.23)

    • * Denotes that component is vulnerable
    BACK
    sophos exploit prevention *
    sophos intercept x endpoint *
    sophos intercept x for server *