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AUSCERT External Security Bulletin Redistribution
ESB-2021.3891
USN-5147-1: Vim vulnerabilities
16 November 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Vim
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3928 CVE-2021-3927 CVE-2021-3903
CVE-2021-3872 CVE-2019-20807 CVE-2017-1000382
CVE-2017-17087
Reference: ESB-2020.3876
ESB-2020.3540
Original Bulletin:
https://ubuntu.com/security/notices/USN-5147-1
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USN-5147-1: Vim vulnerabilities
15 November 2021
Several security issues were fixed in Vim.
Releases
o Ubuntu 21.10
o Ubuntu 21.04
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 ESM
o Ubuntu 14.04 ESM
Packages
o vim - Vi IMproved - enhanced vi editor
Details
It was discovered that Vim incorrectly handled permissions on the .swp
file. A local attacker could possibly use this issue to obtain sensitive
information. This issue only affected Ubuntu 14.04 ESM. ( CVE-2017-17087 )
It was discovered that Vim incorrectly handled restricted mode. A local
attacker could possibly use this issue to bypass restricted mode and
execute arbitrary commands. Note: This update only makes executing shell
commands more difficult. Restricted mode should not be considered a
complete security measure. This issue only affected Ubuntu 14.04 ESM.
( CVE-2019-20807 )
Brian Carpenter discovered that vim incorrectly handled memory
when opening certain files. If a user was tricked into opening
a specially crafted file, a remote attacker could crash the
application, leading to a denial of service, or possible execute
arbitrary code with user privileges. This issue only affected
Ubuntu 20.04 LTS, Ubuntu 21.04 and Ubuntu 21.10. ( CVE-2021-3872 )
It was discovered that vim incorrectly handled memory when
opening certain files. If a user was tricked into opening
a specially crafted file, a remote attacker could crash the
application, leading to a denial of service, or possible execute
arbitrary code with user privileges. ( CVE-2021-3903 )
It was discovered that vim incorrectly handled memory when
opening certain files. If a user was tricked into opening
a specially crafted file, a remote attacker could crash the
application, leading to a denial of service, or possible execute
arbitrary code with user privileges. ( CVE-2021-3927 )
It was discovered that vim incorrectly handled memory when
opening certain files. If a user was tricked into opening
a specially crafted file, a remote attacker could crash the
application, leading to a denial of service, or possible execute
arbitrary code with user privileges. ( CVE-2021-3928 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 21.10
o vim - 2:8.2.2434-3ubuntu3.1
Ubuntu 21.04
o vim - 2:8.2.2434-1ubuntu1.2
Ubuntu 20.04
o vim - 2:8.1.2269-1ubuntu5.4
Ubuntu 18.04
o vim - 2:8.0.1453-1ubuntu1.7
Ubuntu 16.04
o vim - 2:7.4.1689-3ubuntu1.5+esm3
Available with UA Infra or UA Desktop
Ubuntu 14.04
o vim - 2:7.4.052-1ubuntu3.1+esm4
Available with UA Infra or UA Desktop
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-3928
o CVE-2021-3927
o CVE-2017-17087
o CVE-2019-20807
o CVE-2021-3903
o CVE-2021-3872
Related notices
o USN-4582-1 : xxd, vim-athena, vim, vim-common, vim-athena-py2, vim-gtk-py2,
vim-nox, vim-runtime, vim-gnome-py2, vim-nox-py2, vim-gtk, vim-doc,
vim-gtk3, vim-tiny, vim-gtk3-py2, vim-gui-common, vim-gnome
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