CVE-2018-1000879 : Exploit Details and Defense Strategies
Discover the impact of CVE-2018-1000879, a vulnerability in libarchive version starting from commit 379867ecb330b3a952fb7bfa7bffb7bbd5547205, leading to a NULL Pointer Dereference issue in the ACL parser, potentially causing crashes or denial of service.
Starting from commit 379867ecb330b3a952fb7bfa7bffb7bbd5547205 (release v3.3.0 onwards), a vulnerability in libarchive version that falls under CWE-476 has been identified. This vulnerability involves a NULL Pointer Dereference issue in the ACL parser, specifically in the file libarchive/archive_acl.c and the function archive_acl_from_text_l(). Exploiting this vulnerability can lead to a crash or denial of service by opening a specially crafted archive file.
Understanding CVE-2018-1000879
This section provides insights into the nature and impact of the CVE-2018-1000879 vulnerability.
What is CVE-2018-1000879?
CVE-2018-1000879 is a vulnerability in libarchive version starting from commit 379867ecb330b3a952fb7bfa7bffb7bbd5547205, leading to a NULL Pointer Dereference issue in the ACL parser.
The Impact of CVE-2018-1000879
Exploiting this vulnerability can result in a crash or denial of service due to the NULL Pointer Dereference issue in the ACL parser of libarchive.
Technical Details of CVE-2018-1000879
Explore the technical aspects and implications of CVE-2018-1000879.
Vulnerability Description
The vulnerability in libarchive version commit 379867ecb330b3a952fb7bfa7bffb7bbd5547205 onwards involves a CWE-476: NULL Pointer Dereference issue in the ACL parser.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions starting from release v3.3.0 onwards
Exploitation Mechanism
To exploit this vulnerability, the victim must open a specially crafted archive file, triggering the NULL Pointer Dereference issue in the ACL parser.
Mitigation and Prevention
Learn how to mitigate and prevent the CVE-2018-1000879 vulnerability.
Immediate Steps to Take
- Update libarchive to a patched version that addresses the NULL Pointer Dereference issue.
- Avoid opening archive files from untrusted or unknown sources.
Long-Term Security Practices
- Regularly update software and libraries to the latest secure versions.
- Implement robust security measures to prevent malicious exploitation of vulnerabilities.
Patching and Updates
Ensure timely installation of security patches and updates for libarchive to mitigate the CVE-2018-1000879 vulnerability.