MitM attack in GNOME glib-networking



| Updated: 2020-07-03
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-13645
CWE-ID CWE-297
Exploitation vector Network
Public exploit N/A
Vulnerable software
 glib-networking
Other software / Other software solutions

Vendor Gnome Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper validation of certificate with host mismatch

EUVDB-ID: #VU29491

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-13645

CWE-ID: CWE-297 - Improper Validation of Certificate with Host Mismatch

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists in GNOME glib-networking due to implementation of GTlsClientConnection skips hostname verification of the server's TLS certificate if the application fails to specify the expected server identity. A remote attacker can perform a Man-in-he-Middle (MitM) attack and gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

glib-networking: 2.59.2 - 2.64.2

CPE2.3 External links

https://gitlab.gnome.org/GNOME/balsa/-/issues/34
https://gitlab.gnome.org/GNOME/glib-networking/-/issues/135
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HLEX2IP62SU6WJ4SK3U766XGLQK3J62O/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TQEQJQ4XFMFCFJTEXKL2ZO3UELBPCKSK/
https://security.netapp.com/advisory/ntap-20200608-0004/


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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