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CRITICAL · CVSS 9.8 CISA Known Exploited Vulnerability

CVE-2023-38035

Ivanti Sentry Authentication Bypass Vulnerability

Ivanti Sentry

A security vulnerability in MICS Admin Portal in Ivanti MobileIron Sentry versions 9.18.0 and below, which may allow an attacker to bypass authentication controls on the administrative interface due to an insufficiently restrictive Apache HTTPD configuration.

CVSS
9.8
CRITICAL
EPSS
100%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
21 Aug 2023
CWE-863

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 22 August 2023. US federal agencies were required to remediate it by 12 September 2023. CISA records this vulnerability as known to be used in ransomware campaigns.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 100%, which is higher than 99.9% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

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

Frequently asked questions

Is CVE-2023-38035 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2023-38035.

What does CVE-2023-38035 affect?

CVE-2023-38035 affects Ivanti Sentry. A security vulnerability in MICS Admin Portal in Ivanti MobileIron Sentry versions 9.18.0 and below, which may allow an attacker to bypass authentication controls on the administrative interface due to an insufficiently restrictive Apache HTTPD configuration.

How severe is CVE-2023-38035?

CVE-2023-38035 is rated CRITICAL with a CVSS base score of 9.8. EPSS puts the probability of exploitation in the next 30 days at 100%, higher than 99.9% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 12 September 2023.

How should organisations respond to CVE-2023-38035?

Apply the vendor patch for Ivanti Sentry as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.