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Debian Security Advisory 5321-1
Debian Linux Security Advisory 5321-1 - Matthieu Barjole and Victor Cutillas discovered that sudoedit in sudo, a program designed to provide limited super user privileges to specific users, does not properly handle ‘–’ to separate the editor and arguments from files to edit. A local user permitted to edit certain files can take advantage of this flaw to edit a file not permitted by the security policy, resulting in privilege escalation.
-----BEGIN PGP SIGNED MESSAGE-----Hash: SHA512- -------------------------------------------------------------------------Debian Security Advisory DSA-5321-1 [email protected]://www.debian.org/security/ Salvatore BonaccorsoJanuary 18, 2023 https://www.debian.org/security/faq- -------------------------------------------------------------------------Package : sudoCVE ID : CVE-2023-22809Matthieu Barjole and Victor Cutillas discovered that sudoedit in sudo, aprogram designed to provide limited super user privileges to specificusers, does not properly handle '--' to separate the editor andarguments from files to edit. A local user permitted to edit certainfiles can take advantage of this flaw to edit a file not permitted bythe security policy, resulting in privilege escalation.Details can be found in the upstream advisory athttps://www.sudo.ws/security/advisories/sudoedit_any/ .For the stable distribution (bullseye), this problem has been fixed inversion 1.9.5p2-3+deb11u1.We recommend that you upgrade your sudo packages.For the detailed security status of sudo please refer to its securitytracker page at:https://security-tracker.debian.org/tracker/sudoFurther information about Debian Security Advisories, how to applythese updates to your system and frequently asked questions can befound at: https://www.debian.org/security/Mailing list: [email protected] PGP SIGNATURE-----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üWy-----END PGP SIGNATURE-----Related news
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Red Hat Security Advisory 2023-0291-01 - 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.
Red Hat Security Advisory 2023-0281-01 - 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.
Red Hat Security Advisory 2023-0280-01 - 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.
Red Hat Security Advisory 2023-0284-01 - 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.
Red Hat Security Advisory 2023-0282-01 - 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.
Red Hat Security Advisory 2023-0287-01 - 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.
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Red Hat Security Advisory 2023-0283-01 - 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.
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Ubuntu Security Notice 5811-2 - USN-5811-1 fixed a vulnerability in Sudo. This update provides the corresponding update for Ubuntu 16.04 ESM. Matthieu Barjole and Victor Cutillas discovered that Sudo incorrectly handled user-specified editors when using the sudoedit command. A local attacker that has permission to use the sudoedit command could possibly use this issue to edit arbitrary files.
Ubuntu Security Notice 5811-1 - Matthieu Barjole and Victor Cutillas discovered that Sudo incorrectly handled user-specified editors when using the sudoedit command. A local attacker that has permission to use the sudoedit command could possibly use this issue to edit arbitrary files. It was discovered that the Protobuf-c library, used by Sudo, incorrectly handled certain arithmetic shifts. An attacker could possibly use this issue to cause Sudo to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS.
In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR), allowing a local attacker to append arbitrary entries to the list of files to process. This can lead to privilege escalation. Affected versions are 1.8.0 through 1.9.12.p1. The problem exists because a user-specified editor may contain a "--" argument that defeats a protection mechanism, e.g., an EDITOR='vim -- /path/to/extra/file' value.