LineageOS servers hacked, attackers exploited unpatched Salt issues
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2020-11651 +1 in the same advisory: …11652 | Authentication Bypass and Unauthenticated RCE in SaltStack Salt CVE-2020-11651 is a critical (CVSS 9.8) authentication bypass in SaltStack Salt's salt-master process: the ClearFuncs class fails to validate method calls, so a remote attacker can invoke privileged methods without authenticating. By sending crafted messages to the salt-master's network interface, an unauthenticated user can retrieve the master's root tokens/eauth credentials and use them to execute arbitrary commands on salt minions, yielding full remote code execution across the entire Salt deployment. Anyone running affected Salt versions before 2019.2.4 or 3000.x before 3000.2 — including Salt shipped in Debian, Ubuntu, openSUSE Leap, and VMware's Application Remote Collector — is exposed, especially masters reachable on their ZeroMQ ports. Exploitation is confirmed in the wild: the flaw is on CISA's KEV catalog, EPSS puts exploitation probability at 96.6%, attackers have been mass-scanning for vulnerable Salt installs, and breaches using this bug hit Cisco (six servers), LineageOS, Ghost, and DigiCert. Do: Upgrade salt-master to Salt 2019.2.4 or 3000.2 (or later), or apply the patched packages issued by Debian, Ubuntu, and openSUSE; VMware vROps customers should apply VMware's Application Remote Collector fix. Restrict access to the salt-master ZeroMQ ports (4505/4506) to trusted networks and review masters for signs of compromise, such as unexpected root tokens or unauthorized jobs run on minions. | 9.8 group max | 97% | KEV PoC ×2 |
| largetens of thousands of deployments (thousands of internet-exposed Salt masters, plus Salt bundled in Ubuntu/Debian/openSUSE and VMware ARC) |
Full article296 words · extracted from securityaffairs.com · click to collapse
On Saturday, at around 8 pm (US Pacific coast), hackers have breached the LineageOS servers by exploiting an unpatched vulnerability.
On Saturday, at around 8 pm (US Pacific coast), hackers have breached the LineageOS servers by exploiting an unpatched vulnerability.
LineageOS is a free and open-source operating system for smartphones, tablet computers, and set-top boxes, based on the Android mobile platform.
According to the LineageOS team, the attack was quickly detected and attackers had no time to not cause any problem.
https://twitter.com/LineageAndroid/status/1256821056100163584
LineageOS team confirmed that the OS builds, and signing keys for official OS distributions were not affected because they were stored on a separate infrastructure.
The LineageOS maintainers are still investigating the incident, meantime that have taken down their servers to address the issues.
The attackers exploited an unpatched vulnerability to breach its Salt installation. Salt (aka SaltStack) is Python-based, open-source software for event-driven IT automation, remote task execution, and configuration management. Salt allows organizations to monitor and update the state of their servers.
A few days ago, researchers from F-Secure disclosed a number of vulnerabilities in the “Salt” framework, including two issues that could be exploited by attackers to take over Salt installations.
The two flaws, tracked as CVE-2020-11651 and CVE-2020-11652, are a directory traversal issue and an authentication bypass vulnerability respectively. Chaining the issue, an attacker could bypass authentication and run arbitrary code on Salt master servers exposed online.
Administrators of Salt servers started reporting attacks exploiting the above vulnerabilities last week, threat actors used them to deliver backdoors and miners.
Administrators should install the available security updates to protect their installs.
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