ALAS-2021-1728

References: CVE-2020-20703  CVE-2021-3778  CVE-2021-3796  CVE-2021-3872  CVE-2021-3875  CVE-2021-3968  CVE-2021-3973  CVE-2021-3974 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

2024-05-09: CVE-2020-20703 was added to this advisory.

Buffer Overflow vulnerability in VIM v.8.1.2135 allows a remote attacker to execute arbitrary code via the operand parameter. (CVE-2020-20703)

A flaw was found in vim. A possible heap-based buffer overflow could allow an attacker to input a specially crafted file leading to a crash or code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-3778)

A use-after-free vulnerability in vim could allow an attacker to input a specially crafted file leading to memory corruption and a potentially exploitable crash or code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-3796)

An out-of-bounds write flaw was found in vim's drawscreen.c win_redr_status() function. This flaw allows an attacker to trick a user to open a crafted file with specific arguments in vim, triggering an out-of-bounds write. The highest threat from this vulnerability is to confidentiality, integrity, and system availability. (CVE-2021-3872)

There's an out-of-bounds read flaw in Vim's ex_docmd.c. An attacker who is capable of tricking a user into opening a specially crafted file could trigger an out-of-bounds read on a memmove operation, potentially causing an impact to application availability. (CVE-2021-3875)

A flaw was found in vim. A possible heap use-after-free vulnerability could allow an attacker to input a specially crafted file leading to a crash or code execution. The highest threat from this vulnerability is to system availability. (CVE-2021-3968)

A flaw was found in vim. A possible heap-based buffer overflow could allow an attacker to input a specially crafted file leading to a crash or code execution. The highest threat from this vulnerability is to system availability. (CVE-2021-3973)

A flaw was found in vim. A possible use-after-free vulnerability could allow an attacker to input a specially crafted file leading to a crash or code execution. The highest threat from this vulnerability is to system availability. (CVE-2021-3974)

Issue Correction:
Run yum update vim to update your system.

New Packages:

aarch64:
    vim-common-8.2.3642-1.amzn2.0.1.aarch64
    vim-minimal-8.2.3642-1.amzn2.0.1.aarch64
    vim-enhanced-8.2.3642-1.amzn2.0.1.aarch64
    vim-X11-8.2.3642-1.amzn2.0.1.aarch64
    vim-debuginfo-8.2.3642-1.amzn2.0.1.aarch64

i686:
    vim-common-8.2.3642-1.amzn2.0.1.i686
    vim-minimal-8.2.3642-1.amzn2.0.1.i686
    vim-enhanced-8.2.3642-1.amzn2.0.1.i686
    vim-X11-8.2.3642-1.amzn2.0.1.i686
    vim-debuginfo-8.2.3642-1.amzn2.0.1.i686

noarch:
    vim-filesystem-8.2.3642-1.amzn2.0.1.noarch

src:
    vim-8.2.3642-1.amzn2.0.1.src

x86_64:
    vim-common-8.2.3642-1.amzn2.0.1.x86_64
    vim-minimal-8.2.3642-1.amzn2.0.1.x86_64
    vim-enhanced-8.2.3642-1.amzn2.0.1.x86_64
    vim-X11-8.2.3642-1.amzn2.0.1.x86_64
    vim-debuginfo-8.2.3642-1.amzn2.0.1.x86_64