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AUSCERT External Security Bulletin Redistribution
ESB-2021.3241
USN-5093-1: Vim vulnerabilities
29 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Vim
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3796 CVE-2021-3778 CVE-2021-3770
Reference: ASB-2021.0187
ESB-2021.3174
Original Bulletin:
https://ubuntu.com/security/notices/USN-5093-1
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USN-5093-1: Vim vulnerabilities
28 September 2021
Several security issues were fixed in Vim.
Releases
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
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 possibly execute
arbitrary code with user privileges. This issue only affected
Ubuntu 20.04 LTS and Ubuntu 21.04. ( CVE-2021-3770 )
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 possibly execute
arbitrary code with user privileges. ( CVE-2021-3778 )
Dhiraj Mishra 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 possibly execute
arbitrary code with user privileges. ( CVE-2021-3796 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 21.04
o vim - 2:8.2.2434-1ubuntu1.1
Ubuntu 20.04
o vim - 2:8.1.2269-1ubuntu5.3
Ubuntu 18.04
o vim - 2:8.0.1453-1ubuntu1.6
Ubuntu 16.04
o vim - 2:7.4.1689-3ubuntu1.5+esm2
Available with UA Infra or UA Desktop
Ubuntu 14.04
o vim - 2:7.4.052-1ubuntu3.1+esm3
Available with UA Infra or UA Desktop
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-3796
o CVE-2021-3778
o CVE-2021-3770
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