---
title: "CVE-2018-10888\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-10888?format=md
keywords: index, follow
---

# CVE-2018-10888

Publication date 10 July 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**6.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2018-10888?format=md#impact-score)

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## Description

A flaw was found in libgit2 before version 0.27.3. A missing check in
git\_delta\_apply function in delta.c file, may lead to an out-of-bound read
while reading a binary delta file. An attacker may use this flaw to cause a
Denial of Service.

### From the Ubuntu Security Team

Riccardo Schirone discovered that libgit2 mishandled specially crafted input.
If a victim were tricked into cloning a malicious repository or applying a
malicious patch, an attacker could cause libgit2 to leak sensitive information
or crash.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libgit2 | 18.04 LTS bionic | Fixed 0.26.0+dfsg.1-1.1ubuntu0.2 |
| 17.10 artful | Ignored end of life |
| 16.04 LTS xenial | Fixed 0.24.1-2ubuntu0.2 |
| 14.04 LTS trusty | Fixed 0.19.0-2ubuntu0.4 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2018-10888?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| libgit2 | * Other:   [9844d38](https://github.com/libgit2/libgit2/commit/9844d38bed10e9ff17174434b3421b227ae710f3) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.5 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10888)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-10888)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-10888)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-10888)

### Other references

* <https://bugzilla.redhat.com/show_bug.cgi?id=1598024>
* <https://github.com/libgit2/libgit2/releases/tag/v0.27.3>
* <https://www.cve.org/CVERecord?id=CVE-2018-10888>