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CVE-2021-23239

Status Candidate

Overview

The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_edit.c race condition in replacing a user-controlled directory by a symlink to an arbitrary path.

Related Files

Gentoo Linux Security Advisory 202101-33
Posted Jan 27, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202101-33 - Multiple vulnerabilities have been found in sudo, the worst of which could result in privilege escalation. Versions less than 1.9.5_p2 are affected.

tags | advisory, vulnerability
systems | linux, gentoo
advisories | CVE-2021-23239, CVE-2021-23240, CVE-2021-3156
MD5 | ee9d71dd88d18cd35844cbe4ae650331
Ubuntu Security Notice USN-4705-1
Posted Jan 27, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4705-1 - It was discovered that Sudo incorrectly handled memory when parsing command lines. A local attacker could possibly use this issue to obtain unintended access to the administrator account. It was discovered that the Sudo sudoedit utility incorrectly handled checking directory permissions. A local attacker could possibly use this issue to bypass file permissions and determine if a directory exists or not. Various other issues were also addressed.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2021-23239, CVE-2021-3156
MD5 | 7441929fd8273b9e8c967ac727cda7ea
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