Ivanti Avalanche WLAvalancheService Out-Of-Bounds Read Information Disclosure Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Ivanti Avalanche. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the WLAvalancheService, which listens on TCP port 1777 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of SYSTEM.
Additional Details
Ivanti has issued an update to correct this vulnerability. More details can be found at:
https://forums.ivanti.com/s/article/Avalanche-6-4-3-Security-Hardening-and-CVEs-addressed?language=en_US
Disclosure Timeline
- 2023-11-28 - Vulnerability reported to vendor
- 2024-04-23 - Coordinated public release of advisory
- 2024-07-01 - Advisory Updated
Credit
Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative
