Summary
Ivanti has released a security advisory detailing several vulnerabilities being remediated with an update to Ivanti Avalanche. Two critical (CVSSv3: 9.8) heap overflow vulnerabilities have been patched in the WLAvalancheService (CVE-2024-29204) and WLInfoRailService (CVE-2024-24996) components of Ivanti Avalanche. These vulnerabilities allow for an unauthenticated remote attacker to execute arbitrary commands. An update to Ivanti Avalanche 6.4.3 will remediate these vulnerabilities as well as several others. Ivanti is currently not aware of any of their customers being exploited by these vulnerabilities.
Impact Assessment
Ivanti Avalanche is used as an MDM tool, so if that is compromised an attacker could have access to perform actions to any device managed by Ivanti Avalanche. Exploitation can also allow the attacker to open the door to other attacks as well as lateral movement throughout the environment. However, there are no reports of active exploitation and no evidence currently of proof-of-concept code in the wild.
Remediation
Ivanti recommends downloading the Avalanche installer and updating to the latest version of Avalanche 6.4.3. This will remediate the vulnerabilities.
You can follow the upgrade steps in this article as well. It provides a detailed installation guide.
Business Implications
Exploitation of these vulnerabilities will allow an attacker to execute arbitrary code execution against an MDM service. This could put all devices managed by this service at risk for attack as a backdoor can be created with this level of access. This could also potentially cause a denial-of-service condition preventing work from being performed on those devices causing business inefficiencies. Monetary and data loss are to be expected from exploitation.
Access Point Consulting Recommends
Patch: A patch is available which patches critical vulnerabilities, this should be done as soon as possible.
Associated Bulletins
https://nvd.nist.gov/vuln/detail/CVE-2024-29204
https://nvd.nist.gov/vuln/detail/CVE-2024-24996
https://forums.ivanti.com/s/article/Avalanche-6-4-3-Security-Hardening-and-CVEs-addressed?language=en_US