CVE-2021-33928 : Security Advisory and Response
Learn about CVE-2021-33928, a buffer overflow vulnerability in libsolv before 0.7.17 that allows attackers to cause a Denial of Service. Find out the impact, affected systems, and mitigation steps.
A buffer overflow vulnerability was discovered in the function pool_installable in src/repo.h in libsolv before version 0.7.17. This vulnerability allows attackers to exploit the system and cause a Denial of Service attack.
Understanding CVE-2021-33928
This section will provide insights into the nature and impact of the CVE-2021-33928 vulnerability.
What is CVE-2021-33928?
The CVE-2021-33928 is a buffer overflow vulnerability present in libsolv versions before 0.7.17. Attackers can leverage this vulnerability to trigger a Denial of Service on affected systems.
The Impact of CVE-2021-33928
The impact of this vulnerability is severe as it allows malicious actors to disrupt services and operations by causing a Denial of Service condition.
Technical Details of CVE-2021-33928
In this section, we will delve into the technical aspects of the CVE-2021-33928 vulnerability.
Vulnerability Description
The vulnerability arises from improper input validation in the function pool_installable in src/repo.h, leading to a buffer overflow condition that can be exploited by attackers.
Affected Systems and Versions
All versions of libsolv prior to 0.7.17 are affected by CVE-2021-33928. Users are advised to update to the patched version to mitigate the risk.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting malicious inputs to trigger the buffer overflow, potentially leading to a Denial of Service.
Mitigation and Prevention
This section will guide users on how to mitigate and prevent the CVE-2021-33928 vulnerability.
Immediate Steps to Take
Users should update libsolv to version 0.7.17 or above to address the buffer overflow vulnerability and protect their systems from exploitation.
Long-Term Security Practices
Implementing secure coding practices and regularly updating software components can help reduce the risk of similar vulnerabilities in the future.
Patching and Updates
Stay informed about security updates and patches released by the software vendor to ensure the protection of your system against known vulnerabilities.