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ubuntucveUbuntu.comUB:CVE-2020-13645
HistoryMay 28, 2020 - 12:00 a.m.

CVE-2020-13645

2020-05-2800:00:00
ubuntu.com
ubuntu.com
23

6.4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:P/A:N

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

0.006 Low

EPSS

Percentile

79.0%

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.

Bugs

Notes

Author Note
mdeslaur fixing this issue in glib-networking will require fixing balsa too
OSVersionArchitecturePackageVersionFilename
ubuntu19.10noarchbalsa< 2.5.6-2ubuntu0.1UNKNOWN
ubuntu20.04noarchbalsa< 2.6.0-2ubuntu0.1UNKNOWN
ubuntu18.04noarchglib-networking< 2.56.0-1ubuntu0.1UNKNOWN
ubuntu19.10noarchglib-networking< 2.62.1-1ubuntu0.1UNKNOWN
ubuntu20.04noarchglib-networking< 2.64.2-1ubuntu0.1UNKNOWN
ubuntu16.04noarchglib-networking< 2.48.2-1~ubuntu16.04.2UNKNOWN

6.4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:P/A:N

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

0.006 Low

EPSS

Percentile

79.0%