VulnerabilityAnalyzed

CVE-2023-34298

Pulse Secure Client SetupService Directory Traversal Local Privilege Escalation Vulnerability.

HIGH 7.8EPSS 0.97%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.97%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Pulse Secure Client SetupService Directory Traversal Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Pulse Secure Client. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within SetupService. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service. Was ZDI-CAN-17687.

CVSS 3.0: 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.97% probability · 60th percentile
CISA KEV: Not listed
Weakness: CWE-22
Affected: ivanti/pulse secure desktop client · ivanti/pulse secure installer service · ivanti/secure access client
Source: zdi-disclosures@trendmicro.com

References

https://www.zerodayinitiative.com/advisories/ZDI-23-858/Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-858/Third Party Advisory
https://forums.ivanti.com/s/article/CVE-2023-34298-Ivanti-Secure-Access-Client-local-privilege-escalation?language=en_USVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.