Critical · published January 10, 2022
🔥 An integer overflow in Expat prior to version 2.4.3 could give attackers the keys to the castle! Picture a factory assembly line that can churn out more products than it has space for—when the overflow happens, chaos ensues! Just like that, this exploit lets attackers manipulate memory in unpredictable ways, potentially resulting in system crashes or even arbitrary code execution. An attacker exploiting this flaw could cause severe disruptions, leading to crashes or worse—gaining control over the affected systems! With a CVSS score of 9.8, this vulnerability is a ticking time bomb for any service using the outdated Expat library.
Picture a factory assembly line that can churn out more products than it has space for—when the overflow happens, chaos ensues! Just like that, this exploit lets attackers manipulate memory in unpredictable ways, potentially resulting in system crashes or even arbitrary code execution. The integer overflow in the addBinding function of xmlparse.c allows attackers to manipulate memory allocations. This can lead to unexpected behavior, such as buffer overflows, which could be leveraged for code execution.
An attacker exploiting this flaw could cause severe disruptions, leading to crashes or worse—gaining control over the affected systems! With a CVSS score of 9.8, this vulnerability is a ticking time bomb for any service using the outdated Expat library. Upgrade Expat to version 2.4.3 or later immediately to patch this vulnerability. Review your systems to ensure that no applications are still running the vulnerable version, and keep an eye on library dependencies! You can tackle this head-on! By updating now, you’ll secure your systems and keep those pesky attackers at bay. 🛡️
| 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 |
| siemens/sinema_remote_connect_server | < 3.1 | 3.1 |
| debian/debian_linux | all versions | — |
| debian/debian_linux | all versions | — |