CVE-2023-27997

2023-06-1300:00:00

attackerkb.com

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.154 Low

EPSS

Percentile

95.3%

JSON

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

Recent assessments:

mikecybersecaspire at June 13, 2023 7:22am UTC reported:

This vulnerability is expected to be of very high value as Fortigate SSL VPN vulnerabilities have been exploited in the past, particurlarly by state sponsored or otherwise-motivated IAB actors. Fortinet also predict that whilst there isn’t an official link to Volt Typhoon, they do expect the majority of TA’s exploiting this vulnerability, Volt Typhoon have been known to exploit prior Fortigate SSL VPN vulns as part of their initial access campaign.

Assessed Attacker Value: 5
Assessed Attacker Value: 5Assessed Attacker Value: 3