Medium severity · published Jun 1, 2021
CVE-2020-27748
A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer
6.5
CVSS
1.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XD
Xdg-utils · Freedesktop
1.1.0 and later · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27748
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27748
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1899769
Exploit
https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/177
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