QID 355151

Date Published: 2023-05-29

QID 355151: Amazon Linux Security Advisory for xdg-utils : ALAS2023-2023-007

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)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.4 severity.
  • CVSS V2 rated as Medium - 4.3 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2023-2023-007 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 355151

    CVE-2020-27748 | CVE-2022-4055 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2023-2023-007 amazon linux 2023 URL Logo alas.aws.amazon.com/AL2023/ALAS-2023-007.html
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