[USN-6270-1] Vim vulnerabilities

[Nishit Majithia]

==========================================================================
Ubuntu Security Notice USN-6270-1
August 03, 2023

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

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in Vim.

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

Details:

It was discovered that Vim incorrectly handled memory when opening certain
files. If an attacker could trick a user into opening a specially crafted
file, it could cause Vim to crash, or possibly execute arbitrary code. This
issue only affected Ubuntu 22.04 LTS. (CVE-2022-2182)

It was discovered that Vim incorrectly handled memory when deleting buffers
in diff mode. An attacker could possibly use this issue to cause a denial
of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2022-2208)

It was discovered that Vim incorrectly handled memory access. An attacker
could possibly use this issue to cause the corruption of sensitive
information, a crash, or arbitrary code execution. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2022-2210)

It was discovered that Vim incorrectly handled memory when using nested
:source. An attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-2231)

It was discovered that Vim did not properly perform bounds checks when
processing a menu item with the only modifier. An attacker could possibly
use this issue to cause a denial of service. (CVE-2022-2257)

It was discovered that Vim incorrectly handled memory when opening certain
files. If an attacker could trick a user into opening a specially crafted 
file, it could cause Vim to crash, or possibly execute arbitrary code.
(CVE-2022-2264, CVE-2022-2284, CVE-2022-2289)

It was discovered that Vim did not properly perform bounds checks when
going over the end of the typahead. An attacker could possibly use this
issue to cause a denial of service. (CVE-2022-2285)

It was discovered that Vim did not properly perform bounds checks when
reading the provided string. An attacker could possibly use this issue to
cause a denial of service. (CVE-2022-2286)

It was discovered that Vim incorrectly handled memory when adding words
with a control character to the internal spell word list. An attacker could
possibly use this issue to cause a denial of service. (CVE-2022-2287)

Update instructions:

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

Ubuntu 22.04 LTS:
  vim                             2:8.2.3995-1ubuntu2.10
  vim-athena                      2:8.2.3995-1ubuntu2.10
  vim-gtk                         2:8.2.3995-1ubuntu2.10
  vim-gtk3                        2:8.2.3995-1ubuntu2.10
  vim-nox                         2:8.2.3995-1ubuntu2.10
  vim-tiny                        2:8.2.3995-1ubuntu2.10
  xxd                             2:8.2.3995-1ubuntu2.10

Ubuntu 20.04 LTS:
  vim                             2:8.1.2269-1ubuntu5.16
  vim-athena                      2:8.1.2269-1ubuntu5.16
  vim-gtk                         2:8.1.2269-1ubuntu5.16
  vim-gtk3                        2:8.1.2269-1ubuntu5.16
  vim-nox                         2:8.1.2269-1ubuntu5.16
  vim-tiny                        2:8.1.2269-1ubuntu5.16
  xxd                             2:8.1.2269-1ubuntu5.16

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  vim                             2:8.0.1453-1ubuntu1.13+esm3
  vim-athena                      2:8.0.1453-1ubuntu1.13+esm3
  vim-gtk                         2:8.0.1453-1ubuntu1.13+esm3
  vim-gtk3                        2:8.0.1453-1ubuntu1.13+esm3
  vim-nox                         2:8.0.1453-1ubuntu1.13+esm3
  vim-tiny                        2:8.0.1453-1ubuntu1.13+esm3
  xxd                             2:8.0.1453-1ubuntu1.13+esm3

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
  vim                             2:7.4.1689-3ubuntu1.5+esm19
  vim-athena                      2:7.4.1689-3ubuntu1.5+esm19
  vim-gtk                         2:7.4.1689-3ubuntu1.5+esm19
  vim-gtk3                        2:7.4.1689-3ubuntu1.5+esm19
  vim-nox                         2:7.4.1689-3ubuntu1.5+esm19
  vim-tiny                        2:7.4.1689-3ubuntu1.5+esm19

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
  vim                             2:7.4.052-1ubuntu3.1+esm11
  vim-athena                      2:7.4.052-1ubuntu3.1+esm11
  vim-gtk                         2:7.4.052-1ubuntu3.1+esm11
  vim-nox                         2:7.4.052-1ubuntu3.1+esm11
  vim-tiny                        2:7.4.052-1ubuntu3.1+esm11

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

References:
  https://ubuntu.com/security/notices/USN-6270-1
  CVE-2022-2182, CVE-2022-2208, CVE-2022-2210, CVE-2022-2231,
  CVE-2022-2257, CVE-2022-2264, CVE-2022-2284, CVE-2022-2285,
  CVE-2022-2286, CVE-2022-2287, CVE-2022-2289

Package Information:
  https://launchpad.net/ubuntu/+source/vim/2:8.2.3995-1ubuntu2.10
  https://launchpad.net/ubuntu/+source/vim/2:8.1.2269-1ubuntu5.16
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