CVE-2019-13225 : What You Need to Know
Learn about CVE-2019-13225, a NULL Pointer Dereference flaw in Oniguruma 6.9.2 that could lead to denial of service attacks. Find out how to mitigate this vulnerability and protect your systems.
A NULL Pointer Dereference vulnerability in the match_at() function within regexec.c of Oniguruma 6.9.2 could allow an attacker to cause denial of service by providing a manipulated regular expression. This vulnerability impacts Oniguruma, Ruby, and several widely used optional libraries for PHP and Rust.
Understanding CVE-2019-13225
This CVE involves a specific vulnerability in the Oniguruma library that can lead to denial of service attacks.
What is CVE-2019-13225?
The CVE-2019-13225 vulnerability is a NULL Pointer Dereference issue in the match_at() function within regexec.c of Oniguruma 6.9.2. Attackers can exploit this flaw by supplying a manipulated regular expression, potentially causing denial of service.
The Impact of CVE-2019-13225
The vulnerability poses a risk of denial of service attacks, affecting systems that utilize Oniguruma, Ruby, and various optional libraries for PHP and Rust.
Technical Details of CVE-2019-13225
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability arises from a NULL Pointer Dereference in the match_at() function within regexec.c of Oniguruma 6.9.2, enabling attackers to trigger denial of service by providing a crafted regular expression.
Affected Systems and Versions
- Oniguruma 6.9.2
- Ruby
- Optional libraries for PHP and Rust
Exploitation Mechanism
Attackers can exploit this vulnerability by supplying a manipulated regular expression to the match_at() function, leading to a NULL Pointer Dereference and potential denial of service.
Mitigation and Prevention
Protecting systems from CVE-2019-13225 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor patches promptly to address the vulnerability.
- Monitor security advisories for updates and mitigation strategies.
Long-Term Security Practices
- Regularly update software and libraries to ensure the latest security fixes are in place.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
- Install the latest patches provided by Oniguruma, Ruby, PHP, and Rust to mitigate the vulnerability and enhance system security.