CVE-2020-27748
When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird.
Does this matter?
Lower severity and a low EPSS score (1.44%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- EPSS
- 1.44% probability · 72th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-201
- Affected
- freedesktop/xdg-utils
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1899769Issue Tracking, Third Party Advisory
- https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/177Exploit, Issue Tracking, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1899769Issue Tracking, Third Party Advisory
- https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/177Exploit, Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.