Vulnerability CVE-2021-39360

Vulnerability Name:

CVE-2021-39360 (CCN-208003)

Assigned:

2021-05-25

Published:

2021-05-25

Updated:

2021-11-28

Summary:

In GNOME libzapojit through 0.0.3, zpj-skydrive.c does not enable TLS certificate verification on the SoupSessionSync objects it creates, leaving users vulnerable to network MITM attacks.
Note: this is similar to CVE-2016-20011.

CVSS v3 Severity:

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

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

9.1 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
8.0 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:U/RC:R)

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): High Integrity (I): High Availibility (A): None

CVSS v2 Severity:

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

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

9.4 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:N)

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

Vulnerability Type:

CWE-295

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2021-39360

Source: MISC
Type: Vendor Advisory
https://blogs.gnome.org/mcatanzaro/2021/05/25/reminder-soupsessionsync-and-soupsessionasync-default-to-no-tls-certificate-verification/

Source: XF
Type: UNKNOWN
gnome-cve202139360-mitm(208003)

Source: CCN
Type: libzapojit GIT Repository
(CVE-2021-39360) Missing TLS certificate verification

Source: MISC
Type: Issue Tracking, Vendor Advisory
https://gitlab.gnome.org/GNOME/libzapojit/-/issues/4

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-c3395a5df6

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-7f5a82ef57

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-77ce69dba6

Vulnerable Configuration:

Configuration 1:

cpe:/a:gnome:libzapojit:*:*:*:*:*:*:*:* (Version <= 0.0.3)

Configuration 2:

cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:3590	P	libexif12-0.6.21-8.3.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:95220	P	libzapojit-0_0-0-0.0.3-150400.13.8 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:112938	P	libzapojit-0_0-0-0.0.3-7.1 on GA media (Moderate)	2022-01-17

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