Advisory Details

April 23rd, 2024

Ivanti Avalanche WLInfoRailService Integer Overflow Information Disclosure Vulnerability

ZDI-24-376
ZDI-CAN-22756

CVE ID CVE-2024-23531
CVSS SCORE 7.5, AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AFFECTED VENDORS Ivanti
AFFECTED PRODUCTS Avalanche
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information or create a denial-of-service condition on affected installations of Ivanti Avalanche. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the WLInfoRailService, which listens on TCP port 7725 by default. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before reading from memory. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of SYSTEM or to create a denial-of-service condition on the 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
  • 2023-12-06 - Vulnerability reported to vendor
  • 2024-04-23 - Coordinated public release of advisory
CREDIT Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative
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