- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202310-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: GNU Mailutils: unexpected processsing of escape sequences Date: October 19, 2023 Bugs: #802867 ID: 202310-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A vulnerability has been discovered in Mailutils where escape sequences are processed in a context where this may lead to RCE. Background ========== GNU Mailutils is a collection of mail-related utilities, including an IMAP4 server (imap4d) and a Mail User Agent (mail). Affected packages ================= Package Vulnerable Unaffected ------------------ ------------ ------------ net-mail/mailutils < 3.12-r3 >= 3.12-r3 Description =========== A vulnerability has been discovered in GNU Mailutils. Please review the CVE identifier referenced below for details. Impact ====== mail(1) from mailutils would process escape sequences (like ~! shellcommand) in message bodies piped/redirected in. This creates an RCE if some part of the message body is under an attacker's control. Workaround ========== There is no known workaround at this time. Resolution ========== All Mailutils users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/mailutils-3.12-r3" References ========== [ 1 ] CVE-2021-32749 https://nvd.nist.gov/vuln/detail/CVE-2021-32749 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202310-13 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to secur...@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2023 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5
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