PT-2021-4898 · Vim+9 · Vim+9

Brammool · Published 2021-09-07 · Updated 2023-01-11 · CVE-2021-3778

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions vim (affected versions not specified)

Description The issue is related to a Heap-based Buffer Overflow in the vim text editor, specifically in the utf ptr2char() function. This overflow occurs when the write operation exceeds the buffer boundaries in memory. Exploitation of this issue could allow an attacker to execute arbitrary code or cause a denial of service using a specially crafted file.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Heap Based Buffer Overflow

Weakness Enumeration

CWE-787

CWE-122

Related Identifiers

ALSA-2021:4517

ALT-PU-2022-1087

ALT-PU-2022-1711

ALT-PU-2022-1731

ALT-PU-2022-1771

BDU:2021-05633

CESA-2021_4517

CVE-2021-3778

DLA-2876-1

MGASA-2021-0481

OESA-2021-1356

OPENSUSE-SU-2022:0736-1

OPENSUSE-SU-2022_0736-1

OPENSUSE-SU-2022_2102-1

RHSA-2021:4517

RHSA-2021_4517

RLSA-2021:4517

SUSE-SU-2022:0736-1

SUSE-SU-2022:0736-2

SUSE-SU-2022:2102-1

SUSE-SU-2022:4619-1

SUSE-SU-2022_0736-1

USN-5093-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Linuxmint

Red Hat

Rocky Linux

Suse

Ubuntu

Vim

References · 275

• 🔥 https://huntr.dev/bounties/d9c17308-2c99-4f9f-a706-f7f72c24c273 · Exploit
• https://github.com/vim/vim/commit/65b605665997fad54ef39a93199e305af2fe4d7f · Patch
• https://osv.dev/vulnerability/OESA-2021-1356 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3778 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TE62UMYBZE4AE53K6OBBWK32XQ7544QM · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-3778 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:0736-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3778 · Security Note
• https://linux.oracle.com/errata/ELSA-2021-4517.html · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2022:0736-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S42L4Z4DTW4LHLQ4FJ33VEOXRCBE7WN4 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/TE62UMYBZE4AE53K6OBBWK32XQ7544QM · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/TE62UMYBZE4AE53K6OBBWK32XQ7544QM · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2021:4517 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5093-1 · Vendor Advisory