CVE-2018-1172 : Vulnerability Insights and Analysis
Learn about CVE-2018-1172, a vulnerability in The Squid Software Foundation Squid 3.5.27-20180318 that allows remote attackers to trigger a denial-of-service attack. Find mitigation steps and prevention measures.
A vulnerability in The Squid Software Foundation Squid 3.5.27-20180318 allows remote attackers to trigger a denial-of-service attack without authentication.
Understanding CVE-2018-1172
This CVE involves a null pointer dereference vulnerability in the Squid software, potentially leading to a denial-of-service condition.
What is CVE-2018-1172?
The vulnerability in The Squid Software Foundation Squid 3.5.27-20180318 enables remote attackers to cause a denial-of-service on vulnerable installations without requiring authentication. The flaw is located within ClientRequestContext::sslBumpAccessCheck(), allowing attackers to dereference a null pointer by sending a manipulated request.
The Impact of CVE-2018-1172
Exploiting this vulnerability can lead to a situation where users are unable to access the system, affecting its availability and potentially disrupting services.
Technical Details of CVE-2018-1172
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows remote attackers to exploit a null pointer dereference in The Squid Software Foundation Squid 3.5.27-20180318, leading to a denial-of-service condition.
Affected Systems and Versions
- Product: The Squid Software Foundation Squid
- Vendor: The Squid Software Foundation
- Version: 3.5.27-20180318
Exploitation Mechanism
- Attackers can exploit the vulnerability by manipulating requests to trigger the dereference of a null pointer within ClientRequestContext::sslBumpAccessCheck().
Mitigation and Prevention
Protecting systems from CVE-2018-1172 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Monitor vendor and security advisories for patches and updates related to this vulnerability.
- Implement network-level controls to filter out potentially malicious traffic targeting the vulnerable component.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Conduct security assessments and penetration testing to identify and remediate weaknesses in the system.
Patching and Updates
- Apply patches provided by The Squid Software Foundation to address the vulnerability and prevent exploitation.