CVE-2021-3796

Use After Free in vim/vim

Severity Score

7.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

vim is vulnerable to Use After Free

vim es vulnerable a un Uso de memoria Previamente Liberada

A use-after-free vulnerability in vim could allow an attacker to input a specially crafted file leading to memory corruption and a potentially exploitable crash or code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-09-11 CVE Reserved
2021-09-15 CVE Published
2024-04-21 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (11)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2021/10/01/1	Mailing List
https://lists.debian.org/debian-lts-announce/2022/01/msg00003.html	Mailing List
https://security.netapp.com/advisory/ntap-20221118-0004	Third Party Advisory

URL	Date	SRC
https://huntr.dev/bounties/ab60b7f3-6fb1-4ac2-a4fa-4d592e08008d	2024-08-03

URL	Date	SRC
https://github.com/vim/vim/commit/35a9a00afcb20897d462a766793ff45534810dc3	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K4JJBIH3OQSZRVTWKCJCDLGMFGQ5DOH	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S42L4Z4DTW4LHLQ4FJ33VEOXRCBE7WN4	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TE62UMYBZE4AE53K6OBBWK32XQ7544QM	2023-11-07
https://security.gentoo.org/glsa/202208-32	2023-11-07
https://access.redhat.com/security/cve/CVE-2021-3796	2021-11-09
https://bugzilla.redhat.com/show_bug.cgi?id=2004728	2021-11-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Vim Search vendor "Vim"		Vim Search vendor "Vim" for product "Vim"				< 8.2.3428 Search vendor "Vim" for product "Vim" and version " < 8.2.3428"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Netapp Search vendor "Netapp"		Ontap Select Deploy Administration Utility Search vendor "Netapp" for product "Ontap Select Deploy Administration Utility"				-		-		Affected