CVE-2020-13645

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

En GNOME glib-networking versiones hasta 2.64.2, la implementación de GTlsClientConnection omite la verificación del nombre de host del certificado TLS del servidor si la aplicación presenta un fallo al especificar la identidad esperada del servidor. Esto está en contraste con su comportamiento documentado previsto, en el fallo de la verificación del certificado. Las aplicaciones que fallaron al proporcionar la identidad del servidor, incluidas Balsa versiones anteriores a 2.5.11 y versiones 2.6.x anteriores a 2.6.1, aceptan un certificado TLS si el certificado es válido para cualquier host.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-05-28 CVE Reserved
2020-05-28 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-09-21 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-295: Improper Certificate Validation

CAPEC

References (8)

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

URL	Date	SRC
https://gitlab.gnome.org/GNOME/balsa/-/issues/34	2024-08-04
https://gitlab.gnome.org/GNOME/glib-networking/-/issues/135	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HLEX2IP62SU6WJ4SK3U766XGLQK3J62O	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LRCUM22YEWWKNMN2BP5LTVDM5P4VWIXS	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TQEQJQ4XFMFCFJTEXKL2ZO3UELBPCKSK	2023-11-07
https://security.gentoo.org/glsa/202007-50	2023-11-07
https://usn.ubuntu.com/4405-1	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gnome Search vendor "Gnome"		Balsa Search vendor "Gnome" for product "Balsa"				< 2.5.11 Search vendor "Gnome" for product "Balsa" and version " < 2.5.11"		-		Affected
Gnome Search vendor "Gnome"		Balsa Search vendor "Gnome" for product "Balsa"				2.6.0 Search vendor "Gnome" for product "Balsa" and version "2.6.0"		-		Affected
Gnome Search vendor "Gnome"		Glib-networking Search vendor "Gnome" for product "Glib-networking"				< 2.62.4 Search vendor "Gnome" for product "Glib-networking" and version " < 2.62.4"		-		Affected
Gnome Search vendor "Gnome"		Glib-networking Search vendor "Gnome" for product "Glib-networking"				>= 2.64.0 < 2.64.3 Search vendor "Gnome" for product "Glib-networking" and version " >= 2.64.0 < 2.64.3"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04"		lts		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Netapp Search vendor "Netapp"		Cloud Backup Search vendor "Netapp" for product "Cloud Backup"				-		-		Affected
Broadcom Search vendor "Broadcom"		Fabric Operating System Search vendor "Broadcom" for product "Fabric Operating System"				-		-		Affected