CVE-2020-27748 — MEDIUM (6.5)

Vulnerability Description

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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Freedesktop	Xdg-Utils	>= 1.1.0

Related Weaknesses (CWE)

CWE-201

References

https://bugzilla.redhat.com/show_bug.cgi?id=1899769Issue TrackingThird Party Advisory
https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/177ExploitIssue TrackingVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1899769Issue TrackingThird Party Advisory
https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/177ExploitIssue TrackingVendor Advisory

FAQ

What is CVE-2020-27748?

CVE-2020-27748 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 Thunderbi...

How severe is CVE-2020-27748?

CVE-2020-27748 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-27748?

Check the references section above for vendor advisories and patch information. Affected products include: Freedesktop Xdg-Utils.