Input validation error in Ivanti Connect Secure (formerly Pulse Connect Secure) - CVE-2018-9849
Published: May 10, 2018 / Updated: August 8, 2020
Vulnerability identifier: #VU37141
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-9849
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Ivanti
Affected software:
Ivanti Connect Secure (formerly Pulse Connect Secure)
Ivanti Connect Secure (formerly Pulse Connect Secure)
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Pulse Secure Pulse Connect Secure 8.1.x before 8.1R14, 8.2.x before 8.2R11, and 8.3.x before 8.3R5 do not properly process nested XML entities, which allows remote attackers to cause a denial of service (memory consumption and memory errors) via a crafted XML document.
How to mitigate CVE-2018-9849
Install update from vendor's website.