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CVE-2017-17087

Status Candidate

Overview

fileio.c in Vim prior to 8.0.1263 sets the group ownership of a .swp file to the editor's primary group (which may be different from the group ownership of the original file), which allows local users to obtain sensitive information by leveraging an applicable group membership, as demonstrated by /etc/shadow owned by root:shadow mode 0640, but /etc/.shadow.swp owned by root:users mode 0640, a different vulnerability than CVE-2017-1000382.

Related Files

Ubuntu Security Notice USN-5147-1
Posted Nov 15, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5147-1 - 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. 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. Various other issues were also addressed.

tags | advisory, arbitrary, shell, local
systems | linux, ubuntu
advisories | CVE-2017-17087, CVE-2019-20807, CVE-2021-3872, CVE-2021-3903, CVE-2021-3927, CVE-2021-3928
SHA-256 | f777c5816749ed51132d9b601b00feb3b58a6c72797bcb729df12e40510b57db
Ubuntu Security Notice USN-4582-1
Posted Oct 14, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4582-1 - 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 16.04 LTS. 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. Various other issues were also addressed.

tags | advisory, arbitrary, shell, local
systems | linux, ubuntu
advisories | CVE-2017-17087, CVE-2019-20807
SHA-256 | fc47fc2acd0f5696d70ca7ed482b424a07856c290ec8ad0976e4eea6c76971a4
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