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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

Red Hat Security Advisory 2021-1723-01
Posted May 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1723-01 - The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.

tags | advisory, root
systems | linux, redhat
advisories | CVE-2021-23239, CVE-2021-23240
SHA-256 | eaac6a74857744887bf4d8f981f85c15222e7de2df1bae9d31b5fd2386f285f3
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
SHA-256 | 3f9611402a5877782d23f9e9d2f5be342e3982b50a70d76d2296d15cc8e96070
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
SHA-256 | 9b333695ccb46b8a45f17259c0a37c74e099cd2a9241d7e73c503ee60998ba30
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