CVE-2017-18199 : Exploit Details and Defense Strategies
Learn about CVE-2017-18199, a vulnerability in GNU libcdio allowing remote attackers to trigger a denial of service condition via a crafted iso file. Find mitigation steps and preventive measures here.
A vulnerability present in the realloc_symlink function in rock.c, found in GNU libcdio prior to version 1.0.0, could be exploited by remote attackers to trigger a denial of service condition. This could be accomplished by exploiting a NULL Pointer Dereference vulnerability within a specially crafted iso file.
Understanding CVE-2017-18199
This CVE entry describes a vulnerability in GNU libcdio that could lead to a denial of service attack.
What is CVE-2017-18199?
The CVE-2017-18199 vulnerability is related to the realloc_symlink function in rock.c in GNU libcdio before version 1.0.0. It allows remote attackers to cause a denial of service (NULL Pointer Dereference) by using a specially crafted iso file.
The Impact of CVE-2017-18199
The vulnerability could be exploited by remote attackers to trigger a denial of service condition on systems running affected versions of GNU libcdio.
Technical Details of CVE-2017-18199
This section provides more technical insights into the CVE-2017-18199 vulnerability.
Vulnerability Description
The vulnerability lies in the realloc_symlink function in rock.c in GNU libcdio before version 1.0.0, enabling remote attackers to exploit a NULL Pointer Dereference via a crafted iso file.
Affected Systems and Versions
- Product: GNU libcdio
- Vendor: GNU
- Versions affected: Prior to version 1.0.0
Exploitation Mechanism
The exploitation of this vulnerability involves crafting a malicious iso file to trigger a denial of service condition on the target system.
Mitigation and Prevention
To address CVE-2017-18199, follow these mitigation strategies:
Immediate Steps to Take
- Update GNU libcdio to version 1.0.0 or later to mitigate the vulnerability.
- Exercise caution when handling iso files from untrusted sources.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions to patch known vulnerabilities.
Patching and Updates
- Apply security patches provided by the vendor promptly to protect systems from potential exploits.