6.5
MEDIUM
CVE-2018-8099
Git Denial of Service (Double Free)
Description

Incorrect returning of an error code in the index.c:read_entry() function leads to a double free in libgit2 before v0.26.2, which allows an attacker to cause a denial of service via a crafted repository index file.

INFO

Published Date :

March 14, 2018, 12:29 a.m.

Last Modified :

April 25, 2022, 8:41 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2018-8099 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Libgit2 libgit2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-8099.

URL Resource
https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe Patch Third Party Advisory
https://libgit2.github.com/security/ Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html Mailing List Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-8099 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-8099 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Apr. 25, 2022

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html Mailing List, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:libgit2_project:libgit2:*:*:*:*:*:*:*:* versions up to (excluding) 0.26.2 OR *cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:* versions up to (excluding) 0.26.2
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 21, 2022

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 13, 2018

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe No Types Assigned https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe Patch, Third Party Advisory
    Changed Reference Type https://libgit2.github.com/security/ No Types Assigned https://libgit2.github.com/security/ Patch, Third Party Advisory
    Added CWE CWE-415
    Added CPE Configuration OR *cpe:2.3:a:libgit2_project:libgit2:*:*:*:*:*:*:*:* versions up to (excluding) 0.26.2
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-8099 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-8099 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.27 }} -0.11%

score

0.63470

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability