High · published January 6, 2026
⚠️ A crafty input is all it takes to trigger a heap buffer over-read! In the wolfSSH_CleanPath() function, an attacker can exploit this by sending a specially crafted SCP path with '/./' sequences. 🔥 Think of it like a librarian who accidentally reads the last item on a shelf because they misinterpreted the catalog — they're reading more than they should, leading to confusion and potential chaos in the records. 📚 This vulnerability allows an authenticated attacker to exploit the system, resulting in unintentional exposure of memory contents. While it may not seem catastrophic, it can lead to unintended information leaks that could be leveraged for more severe attacks in the future.
Think of it like a librarian who accidentally reads the last item on a shelf because they misinterpreted the catalog — they're reading more than they should, leading to confusion and potential chaos in the records. 📚 The heap buffer over-read occurs when the wolfSSH_CleanPath() function incorrectly processes '/./' sequences in the SCP path provided by the attacker, allowing them to read beyond the intended memory area by just one byte.
This vulnerability allows an authenticated attacker to exploit the system, resulting in unintentional exposure of memory contents. While it may not seem catastrophic, it can lead to unintended information leaks that could be leveraged for more severe attacks in the future. To mitigate this vulnerability, ensure you patch wolfSSH to the latest version available. Additionally, validate and sanitize all SCP path inputs to prevent any malicious sequences from being processed. Regular audits of input validation can keep your system secure! You've got this! With a few tweaks, you can lock down your application and keep it secure. 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| wolfssh/wolfssh | ≥ 1.4.12, < 1.4.22 | 1.4.22 |