CVE-2018-10888 : Security Advisory and Response

A vulnerability was discovered in libgit2 before version 0.27.3, allowing for a potential Denial of Service attack.

Understanding CVE-2018-10888

Prior to version 0.27.3, a flaw in libgit2's delta.c file could lead to an out-of-bound read, posing a security risk.

What is CVE-2018-10888?

In libgit2 before version 0.27.3, a missing check in the git_delta_apply function could result in an out-of-bound read when processing a binary delta file.
This vulnerability could be exploited by an attacker to trigger a Denial of Service attack.

The Impact of CVE-2018-10888

An attacker could potentially exploit this flaw to cause a Denial of Service (DoS) by inducing an out-of-bound read during the processing of a binary delta file.

Technical Details of CVE-2018-10888

A detailed look at the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability in libgit2 before version 0.27.3 arises from a missing check in the git_delta_apply function within the delta.c file.

Affected Systems and Versions

Product: libgit2
Vendor: libgit2
Versions Affected: Before version 0.27.3

Exploitation Mechanism

Attackers could exploit this vulnerability by crafting a malicious binary delta file to trigger an out-of-bound read, potentially leading to a DoS attack.

Mitigation and Prevention

Measures to address and prevent the CVE-2018-10888 vulnerability.

Immediate Steps to Take

Update libgit2 to version 0.27.3 or later to mitigate the vulnerability.
Monitor official sources for security updates and patches related to libgit2.

Long-Term Security Practices

Regularly update software and libraries to the latest versions to address known vulnerabilities.
Implement secure coding practices to prevent similar flaws in the future.

Patching and Updates

Apply patches and updates provided by libgit2 to address the vulnerability and enhance overall security.