Input validation error in KDE kmail

1) Input validation error

EUVDB-ID: #VU34443

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11880

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

An issue was discovered in KDE KMail before 19.12.3. By using the proprietary (non-RFC6068) "mailto?attach=..." parameter, a website (or other source of mailto links) can make KMail attach local files to a composed email message without showing a warning to the user, as demonstrated by an attach=.bash_history value.

Mitigation

Install update from vendor's website.

Vulnerable software versions

kmail: 19.12.0 - 19.12.2

CPE2.3

• cpe:2.3:a:kde_org:kmail:19.12.0:*:*:*:*:*:*:*
• cpe:2.3:a:kde_org:kmail:19.12.1:*:*:*:*:*:*:*
• cpe:2.3:a:kde_org:kmail:19.12.2:*:*:*:*:*:*:*

External links

https://cgit.kde.org/kmail.git/commit/?id=2a348eccd352260f192d9b449492071bbf2b34b1
https://cgit.kde.org/kmail.git/tag/?h=v19.12.3

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.