Improper Certificate Validation in evolution-ews



| Updated: 2020-07-17
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-3890
CWE-ID CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
 evolution-ews
Other
Vendor Gnome Development Team

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper Certificate Validation

EUVDB-ID: #VU30974

Risk: High

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-3890

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

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

It was discovered evolution-ews before 3.31.3 does not check the validity of SSL certificates. An attacker could abuse this flaw to get confidential information by tricking the user into connecting to a fake server without the user noticing the difference.

Mitigation

Install update from vendor's website.

Vulnerable software versions

evolution-ews: 3.31.1 - 3.31.2

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2019:3699
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3890
https://gitlab.gnome.org/GNOME/evolution-ews/issues/27


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.



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