Vulnerability CVE-2020-13645

Vulnerability Name:

CVE-2020-13645 (CCN-182648)

Assigned:

2020-04-13

Published:

2020-04-13

Updated:

2021-06-22

Summary:

In GNOME glib-networking through 2.64.2, the implementation of GTlsClientConnection skips hostname verification of the server's TLS certificate if the application fails to specify the expected server identity. This is in contrast to its intended documented behavior, to fail the certificate verification. Applications that fail to provide the server identity, including Balsa before 2.5.11 and 2.6.x before 2.6.1, accept a TLS certificate if the certificate is valid for any host.

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): Low Availibility (A): None

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

CVSS v2 Severity:

6.4 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): None

4.9 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-295

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2020-13645

Source: XF
Type: UNKNOWN
gnome-cve202013645-mitm(182648)

Source: CCN
Type: GNOME GIT Repository
GTlsClientConnection warning about NULL server-identity property

Source: MISC
Type: Exploit, Vendor Advisory
https://gitlab.gnome.org/GNOME/balsa/-/issues/34

Source: MISC
Type: Exploit, Vendor Advisory
https://gitlab.gnome.org/GNOME/glib-networking/-/issues/135

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-cadbc5992f

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-a83c8cd358

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-98ebbd1397

Source: GENTOO
Type: Third Party Advisory
GLSA-202007-50

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20200608-0004/

Source: UBUNTU
Type: Third Party Advisory
USN-4405-1

Source: CCN
Type: IBM Security Bulletin 6551876 (Cloud Pak for Security)
Cloud Pak for Security uses packages that are vulnerable to multiple CVEs

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-13645

Vulnerable Configuration:

Configuration 1:

cpe:/a:gnome:balsa:*:*:*:*:*:*:*:* (Version < 2.5.11)

OR cpe:/a:gnome:balsa:2.6.0:*:*:*:*:*:*:*

OR cpe:/a:gnome:glib-networking:*:*:*:*:*:*:*:* (Version < 2.62.4)

OR cpe:/a:gnome:glib-networking:*:*:*:*:*:*:*:* (Version >= 2.64.0 and < 2.64.3)

Configuration 2:

cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

OR cpe:/o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

OR cpe:/o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*

OR cpe:/o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*

Configuration 3:

cpe:/o:fedoraproject:fedora:31:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*

Configuration 4:

cpe:/a:netapp:cloud_backup:-:*:*:*:*:*:*:*

OR cpe:/o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:gnome:glib-networking:2.64.2:*:*:*:*:*:*:*

AND

cpe:/a:ibm:cloud_pak_for_security:1.7.2.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:7508	P	glib-networking-2.70.1-150400.1.6 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:51996	P	Security update for mozilla-nss (Important) (in QA)	2023-02-10
oval:org.opensuse.security:def:3725	P	Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP4) (Important)	2022-07-21
oval:org.opensuse.security:def:3542	P	lcms2-2.7-9.7.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:94563	P	glib-networking-2.70.1-150400.1.6 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:2933	P	glib-networking-2.70.1-150400.1.6 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:94654	P	libldap-2_4-2-2.4.46-150200.14.5.1 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:100088	P	(Important)	2022-03-04
oval:org.opensuse.security:def:102175	P	Security update for cobbler (Important)	2022-02-18
oval:org.opensuse.security:def:112303	P	glib-networking-2.68.1-1.3 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:31719	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:59578	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:89491	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:55283	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:85785	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:125641	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:34013	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:30162	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:57542	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:88232	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:83489	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:32237	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:59836	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:23723	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:55985	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:86183	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:126809	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:34612	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:30282	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:58060	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:88549	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:51711	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:84251	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:5934	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:33061	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:60435	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:24008	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:56105	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:86701	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:82667	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:127206	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:31321	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:58884	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:89233	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:84709	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:33755	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:29460	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:57144	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:87525	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:83369	P	Security update for glib-networking (Important)	2021-12-13
oval:org.opensuse.security:def:105874	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:8878	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:70519	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:99578	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:106754	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:9828	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:92628	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:69769	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:98989	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:106069	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:9073	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:92039	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:99777	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:10188	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:92827	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:69968	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:99184	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:106268	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:111156	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:9434	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:92234	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:105679	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:10379	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:8687	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:70328	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:99379	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:106467	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:9629	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:92429	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:69574	P	Security update for glib-networking (Important)	2021-12-10
oval:org.opensuse.security:def:95462	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:824	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:64814	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:76414	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:111821	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:5914	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:73753	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:67003	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:108033	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:6257	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:73936	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:42147	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:67346	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:108841	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:117547	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:101555	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:64631	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:76071	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:42243	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:101367	P	Security update for glib-networking (Important)	2021-12-06
oval:org.opensuse.security:def:105826	P	glib-networking-2.68.1-1.3 on GA media (Moderate)	2021-10-01
oval:org.opensuse.security:def:109761	P	Security update for balsa (Moderate)	2021-08-05
oval:org.opensuse.security:def:11109	P	Security update for balsa (Moderate)	2021-08-05
oval:org.opensuse.security:def:96414	P	Security update for balsa (Moderate)	2021-08-05
oval:org.opensuse.security:def:110991	P	Security update for balsa (Moderate)	2021-08-05
oval:org.opensuse.security:def:103104	P	Security update for balsa (Moderate)	2021-08-05
oval:org.opensuse.security:def:111491	P	Security update for balsa (Moderate)	2021-08-05

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