CVE-2021-46195 : What You Need to Know
Learn about CVE-2021-46195 impacting GCC v12.0, allowing DoS attacks through uncontrolled recursion. Find mitigation steps and affected versions here.
This CVE describes a vulnerability in GCC v12.0 that allows attackers to cause a Denial of Service (DoS) by triggering uncontrolled recursion.
Understanding CVE-2021-46195
GCC v12.0 vulnerability leading to a DoS attack.
What is CVE-2021-46195?
GCC v12.0 has a flaw in libiberty/rust-demangle.c, allowing attackers to exploit uncontrolled recursion, leading to a DoS attack.
The Impact of CVE-2021-46195
- Attackers can exhaust CPU and memory resources, causing a DoS condition.
Technical Details of CVE-2021-46195
Details on the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability in GCC v12.0 enables attackers to trigger uncontrolled recursion.
Affected Systems and Versions
- Affected: GCC v12.0
Exploitation Mechanism
- Attackers exploit the vulnerability in libiberty/rust-demangle.c to trigger uncontrolled recursion.
Mitigation and Prevention
Ways to mitigate and prevent the exploitation of CVE-2021-46195.
Immediate Steps to Take
- Update GCC to a non-vulnerable version.
- Apply patches provided by the vendor or community.
- Monitor CPU and memory usage for unusual behavior.
Long-Term Security Practices
- Regularly update software to the latest versions.
- Implement proper input validation mechanisms.
- Conduct routine security assessments and audits.
Patching and Updates
- Keep up with security updates released by GCC.
- Follow best practices for secure coding to prevent recursive vulnerabilities.