Combined OpenSSH and musl-libc flaws let anyone into Alpine Linux and other distros by typing anything over 256 characters as a password

Combined OpenSSH and musl-libc flaws let anyone into Alpine Linux and other distros by typing anything over 256 characters as a password

Meanwhile, the parties involved are playing a game of hot potato with who's fault.

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It works if you set an empty password for system users, which is the default on multiple distros. The bug is present, though not necessarily enabled, across Buildroot, Yocto, and Void Linux. OpenWRT uses Dropbear for authentication by default, but users can install OpenSSH instead.

The largest concern is by far Alpine, though, as it's pretty much the default choice for what could amount to millions of installs across Docker/Kubernetes/Proxmox containers and endless dependencies thereof, servers, cloud VMs, and embedded devices, among many others. Alpine comes with the requisite conditions set and password authentication enabled by default, which is why it needs immediate patching.

Broadly speaking, the vulnerability combination is: OpenSSH, musl, password authentication not explicitly disabled, not using PAM, and the one arbitrary user with a password set, using a SHA-512/256 hash. Patch your systems immediately, as per the project's advisory note . Meanwhile, the easiest mitigation is explicitly setting "PasswordAuthentication" to "no" in your OpenSSH configuration file and restarting the service.

Leaked private keys for eight CA certificates let any attacker impersonate any domain

Malicious VPN config files can let attackers run commands on Asus routers

Key considerations

  • Investor positioning can change fast
  • Volatility remains possible near catalysts
  • Macro rates and liquidity can dominate flows

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