==========================================================================
Ubuntu Security Notice USN-5460-1
June 06, 2022

vim vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in Vim.

Software Description:
- vim: Vi IMproved - enhanced vi editor

Details:

It was discovered that Vim was incorrectly processing Vim buffers.
An attacker could possibly use this issue to perform illegal memory
access and expose sensitive information. (CVE-2022-0554)

It was discovered that Vim was not properly performing bounds checks
for column numbers when replacing tabs with spaces or spaces with
tabs, which could cause a heap buffer overflow. An attacker could
possibly use this issue to cause a denial of service or execute
arbitrary code. (CVE-2022-0572)

It was discovered that Vim was not properly performing validation of
data that contained special multi-byte characters, which could cause
an out-of-bounds read. An attacker could possibly use this issue to
cause a denial of service. (CVE-2022-0685)

It was discovered that Vim was incorrectly processing data used to
define indentation in a file, which could cause a heap buffer
overflow. An attacker could possibly use this issue to cause a denial
of service. (CVE-2022-0714)

It was discovered that Vim was incorrectly processing certain regular
expression patterns and strings, which could cause an out-of-bounds
read. An attacker could possibly use this issue to cause a denial of
service. (CVE-2022-0729)

It was discovered that Vim was not properly performing bounds checks
when executing spell suggestion commands, which could cause a heap
buffer overflow. An attacker could possibly use this issue to cause a
denial of service or execute arbitrary code. (CVE-2022-0943)

It was discovered that Vim was incorrectly performing bounds checks
when processing invalid commands with composing characters in Ex
mode, which could cause a buffer overflow. An attacker could possibly
use this issue to cause a denial of service or execute arbitrary
code. (CVE-2022-1616)

It was discovered that Vim was not properly processing latin1 data
when issuing Ex commands, which could cause a heap buffer overflow.
An attacker could possibly use this issue to cause a denial of
service or execute arbitrary code. (CVE-2022-1619)

It was discovered that Vim was not properly performing memory
management when dealing with invalid regular expression patterns in
buffers, which could cause a NULL pointer dereference. An attacker
could possibly use this issue to cause a denial of service.
(CVE-2022-1620)

It was discovered that Vim was not properly processing invalid bytes
when performing spell check operations, which could cause a heap
buffer overflow. An attacker could possibly use this issue to cause a
denial of service or execute arbitrary code. (CVE-2022-1621)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 ESM:
   vim                             2:7.4.1689-3ubuntu1.5+esm6

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-5460-1
   CVE-2022-0554, CVE-2022-0572, CVE-2022-0685, CVE-2022-0714,
   CVE-2022-0729, CVE-2022-0943, CVE-2022-1616, CVE-2022-1619,
   CVE-2022-1620, CVE-2022-1621