Critical · published January 10, 2022
🔥 An integer overflow in Expat could let attackers cause havoc with just the right input! Think of it like a factory that has a strict limit on how much material it can process. An integer overflow is like cramming in too much, causing the entire assembly line to break down, spilling everything everywhere. If exploited, an attacker could crash the system or trigger unexpected behavior, potentially leading to severe application crashes or data corruption. With a CVSS score of 9.8, this vulnerability is a serious threat that demands immediate action!
Think of it like a factory that has a strict limit on how much material it can process. An integer overflow is like cramming in too much, causing the entire assembly line to break down, spilling everything everywhere. The integer overflow in the build_model function within xmlparse.c can lead to unpredictable outcomes when handling large XML files, as values wrap around without proper checks.
If exploited, an attacker could crash the system or trigger unexpected behavior, potentially leading to severe application crashes or data corruption. With a CVSS score of 9.8, this vulnerability is a serious threat that demands immediate action! Update Expat to version 2.4.3 or later immediately to mitigate this risk. Also, review any XML parsing code in your applications to ensure it handles large inputs securely. Don't skip these updates! This is fixable! Stay proactive, and you'll keep your systems safe and sound! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| libexpat_project/libexpat | < 2.4.3 | 2.4.3 |
| tenable/nessus | < 8.15.3 | 8.15.3 |
| tenable/nessus | ≥ 10.0.0, < 10.1.1 | 10.1.1 |
| debian/debian_linux | all versions | — |
| debian/debian_linux | all versions | — |
| siemens/sinema_remote_connect_server | < 3.1 | 3.1 |