=========================================================================Ubuntu Security Notice USN-5433-1
May 23, 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 incorrectly handled parsing of filenames in its
search functionality. If a user were tricked into opening a specially
crafted
file, an attacker could crash the application, leading to a denial of
service. (CVE-2021-3973)
It was discovered that Vim incorrectly handled memory when opening and
searching the contents of certain files. If a user were tricked into opening
a specially crafted file, an attacker could crash the application,
leading to
a denial of service, or possibly achieve code execution with user
privileges.
(CVE-2021-3974)
It was discovered that Vim incorrectly handled memory when opening and
editing certain files. If a user were tricked into opening a specially
crafted file,
an attacker could crash the application, leading to a denial of service, or
possibly achieve code execution with user privileges. (CVE-2021-3984,
CVE-2021-4019, CVE-2021-4069)
It was discovered that Vim was using freed memory when dealing with regular
expressions inside a visual selection. If a user were tricked into opening a
specially crafted file, an attacker could crash the application, leading
to a
denial of service, or possibly achieve code execution with user privileges.
(CVE-2021-4192)
It was discovered that Vim was incorrectly performing read and write
operations when in visual block mode, going beyond the end of a line and
causing a heap buffer overflow. If a user were tricked into opening a
specially crafted file, an attacker could crash the application, leading
to a
denial of service, or possibly achieve code execution with user privileges.
(CVE-2022-0261, CVE-2022-0318)
It was discovered that Vim was using freed memory when dealing with regular
expressions through its old regular expression engine. If a user were
tricked
into opening a specially crafted file, an attacker could crash the
application,
leading to a denial of service, or possibly achieve code execution with user
privileges. (CVE-2022-1154)
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+esm4
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5433-1
CVE-2021-3973, CVE-2021-3974, CVE-2021-3984, CVE-2021-4019,
CVE-2021-4069, CVE-2021-4192, CVE-2022-0261, CVE-2022-0318,
CVE-2022-1154
