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Ubuntu 23.04 USN-6154-1 Critical: Vim Denial Of Service

ubuntu
Calendar Grey June 12, 2023
Dist Ubuntu Esm H88
The security bulletin USN-6154-1 highlights critical vulnerabilities in Vim and outlines update paths for impacted versions of Ubuntu.
Several security issues were fixed in Vim.

Summary

Several security issues were fixed in Vim.

Software Description:

- vim: Vi IMproved - enhanced vi editor

Details:

It was discovered that Vim was using uninitialized memory when fuzzy

matching, which could lead to invalid memory access. An attacker could

possibly use this issue to cause a denial of service or execute arbitrary

code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 22.10 and Ubuntu

23.04. (CVE-2023-2426)

It was discovered that Vim was not properly performing bounds checks when

processing register contents, which could lead to a NULL pointer

dereference. An attacker could possibly use this issue to cause a denial

of service or execute arbitrary code. (CVE-2023-2609)

It was discovered that Vim was not properly limiting the length of

substitution expression strings, which could lead to excessive memory

consumption. An attacker could possibly use this issue to cause a denial

of service. (CVE-2023-2610)

Topics%20covered

Topics Covered

security advisory Ubuntu critical severity Denial Of Service Vim Issue

Update Instructions

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

Ubuntu 23.04:
   vim                             2:9.0.1000-4ubuntu3.1
   vim-tiny                        2:9.0.1000-4ubuntu3.1

Ubuntu 22.10:
   vim                             2:9.0.0242-1ubuntu1.4
   vim-tiny                        2:9.0.0242-1ubuntu1.4

Ubuntu 22.04 LTS:
   vim                             2:8.2.3995-1ubuntu2.8
   vim-tiny                        2:8.2.3995-1ubuntu2.8

Ubuntu 20.04 LTS:
   vim                             2:8.1.2269-1ubuntu5.15
   vim-tiny                        2:8.1.2269-1ubuntu5.15

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   vim                             2:8.0.1453-1ubuntu1.13+esm1
   vim-tiny                        2:8.0.1453-1ubuntu1.13+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   vim                             2:7.4.1689-3ubuntu1.5+esm18
   vim-tiny                        2:7.4.1689-3ubuntu1.5+esm18

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   vim                             2:7.4.052-1ubuntu3.1+esm10
   vim-tiny                        2:7.4.052-1ubuntu3.1+esm10

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

References

  https://ubuntu.com/security/notices/USN-6154-1

  CVE-2023-2426, CVE-2023-2609, CVE-2023-2610

Severity
critical
Lowest
Low
Medium
High
Critical

June 12, 2023

Topics%20covered

Topics Covered

security advisory Ubuntu critical severity Denial Of Service Vim Issue

Package Information

  https://launchpad.net/ubuntu/+source/vim/2:9.0.1000-4ubuntu3.1
  https://launchpad.net/ubuntu/+source/vim/2:9.0.0242-1ubuntu1.4
  https://launchpad.net/ubuntu/+source/vim/2:8.2.3995-1ubuntu2.8
  https://launchpad.net/ubuntu/+source/vim/2:8.1.2269-1ubuntu5.15

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