CVE-2022-0982 : Vulnerability Insights and Analysis
Understand the Buffer Overflow vulnerability (CVE-2022-0982) in Accel-PPP v1.12. Learn its impact, technical details, affected systems, and mitigation strategies to enhance cybersecurity.
A detailed overview of the Buffer Overflow vulnerability via crafted client request in Accel-PPP v1.12.
Understanding CVE-2022-0982
This section provides insights into the nature of the vulnerability and its potential impact.
What is CVE-2022-0982?
The Buffer Overflow vulnerability in Accel-PPP v1.12 is caused by a memory corruption issue in the telnet_input_char function, allowing remote attackers to execute arbitrary code or crash the telnet service.
The Impact of CVE-2022-0982
If exploited, this vulnerability can enable malicious clients to trigger a buffer overflow by sending specially crafted requests, potentially leading to a denial of service (DoS) or arbitrary code execution on the target system.
Technical Details of CVE-2022-0982
This section delves into the technical specifics of the vulnerability in Accel-PPP v1.12.
Vulnerability Description
The telnet_input_char function in opt/src/accel-pppd/cli/telnet.c copies user input cmdline_len to a fixed buffer b->buf without proper bounds checking, allowing an attacker to overwrite adjacent memory locations or execute arbitrary code.
Affected Systems and Versions
Accel-PPP v1.12 is confirmed to be affected by this vulnerability. It is crucial for users of this version to implement appropriate security measures.
Exploitation Mechanism
By establishing a connection with a vulnerable Accel-PPP server, an attacker can send specially crafted client requests to exploit the buffer overflow and compromise the target system.
Mitigation and Prevention
Explore the recommended steps to mitigate the impact of CVE-2022-0982 and prevent potential exploitation.
Immediate Steps to Take
Users are advised to update Accel-PPP to a patched version, apply necessary security configurations, and monitor network traffic for any suspicious activities.
Long-Term Security Practices
Incorporate network segmentation, access control policies, and regular security assessments to fortify the overall cybersecurity posture against buffer overflow attacks.
Patching and Updates
Stay informed about security updates released by the vendor and promptly apply patches to address known vulnerabilities and enhance the resilience of Accel-PPP installations.