CVE-2017-8845 : What You Need to Know
Learn about CVE-2017-8845, a vulnerability in LZO 2.08 exploited by remote attackers to trigger a denial of service condition in lrzip 0.631. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
CVE-2017-8845 was published on May 8, 2017, by MITRE. It involves a vulnerability in LZO 2.08 that can be exploited by remote attackers to trigger a denial of service condition in lrzip 0.631.
Understanding CVE-2017-8845
This CVE entry highlights a specific vulnerability in the lzo1x_d.ch file within LZO 2.08, leading to a denial of service scenario in lrzip 0.631.
What is CVE-2017-8845?
The vulnerability allows remote attackers to exploit the lzo1x_decompress function, causing an invalid memory read and application crash by sending a specially crafted archive.
The Impact of CVE-2017-8845
The exploitation of this vulnerability can result in a denial of service condition, potentially leading to application crashes and system instability.
Technical Details of CVE-2017-8845
This section delves into the technical aspects of the CVE entry.
Vulnerability Description
The lzo1x_decompress function in lzo1x_d.ch in LZO 2.08, as utilized in lrzip 0.631, enables remote attackers to induce a denial of service through an invalid memory read.
Affected Systems and Versions
- Product: N/A
- Vendor: N/A
- Versions: N/A
Exploitation Mechanism
By sending a specially crafted archive, attackers can trigger the vulnerability in the lzo1x_decompress function, leading to an invalid memory read and application crash.
Mitigation and Prevention
Protecting systems from CVE-2017-8845 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply relevant patches and updates promptly.
- Monitor vendor advisories for mitigation guidance.
- Implement network-level protections to filter out malicious traffic.
Long-Term Security Practices
- Regularly update software and systems to patch known vulnerabilities.
- Conduct security assessments and penetration testing to identify weaknesses.
- Educate users on safe browsing habits and email security.
- Employ intrusion detection and prevention systems to detect and block malicious activities.
Patching and Updates
Ensure that all relevant patches and updates for LZO and lrzip are applied to mitigate the vulnerability effectively.