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How the mentioned CVE works:
The vulnerability CVE-2025-47482 exists in the archived ncurses-rs Rust bindings for the ncurses library. Multiple string reading functions, such as those handling environment variables or file paths, were implemented unsafely. When these functions read a string that lacks a null terminator, they incorrectly set the length of the returned Rust string to its full capacity instead of the actual number of bytes read. This error exposes the contents of the uninitialized memory buffer allocated for the string. Any sensitive data previously stored in that memory location, like passwords or keys from other parts of the application, can be leaked through this mechanism, leading to a information disclosure risk.
Platform: ncurses-rs
Version: All versions
Vulnerability: Information Disclosure
Severity: Moderate
date: 2025-10-22
Prediction: 2025-11-19
What Undercode Say:
`strings target/program | grep -i “secret”`
`valgrind –track-origins=yes ./vulnerable_binary`
`export TERMINFO=/non/existent/path`
How Exploit:
An attacker can craft a specific environment, such as setting the `TERMINFO` environment variable to point to a non-existent file or a file without a valid null-terminated string. When the vulnerable application uses the affected ncurses-rs functions to read this variable, it will return a string containing fragments of uninitialized heap memory. This data can then be exfiltrated by the attacker, for example, by causing the application to log the string or display it in an error message.
Protection from this CVE:
Do not use ncurses-rs.
Migrate to maintained forks.
Update system ncurses library.
Impact:
Information Disclosure.
Sensitive data leakage.
Potential credential exposure.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: github.com
Extra Source Hub:
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