Amazon Linux 2023 Security Advisory: ALAS2023-2023-007
Advisory Released Date: 2023-03-22
Advisory Updated Date: 2023-03-22
A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird. (CVE-2020-27748)
When xdg-mail is configured to use thunderbird for mailto URLs, improper parsing of the URL can lead to additional headers being passed to thunderbird that should not be included per RFC 2368. An attacker can use this method to create a mailto URL that looks safe to users, but will actually attach files when clicked. (CVE-2022-4055)
Affected Packages:
xdg-utils
Issue Correction:
Run dnf update xdg-utils --releasever 2023.0.20230322 or dnf update --advisory ALAS2023-2023-007 --releasever 2023.0.20230322 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
noarch:
xdg-utils-1.1.3-12.amzn2023.0.1.noarch
src:
xdg-utils-1.1.3-12.amzn2023.0.1.src