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freebsdFreeBSD9E8F0766-7D21-11EB-A2BE-001999F8D30B
HistoryFeb 20, 2021 - 12:00 a.m.

asterisk -- Crash when negotiating T.38 with a zero port

2021-02-2000:00:00
vuxml.freebsd.org
19

4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.006 Low

EPSS

Percentile

79.2%

The Asterisk project reports:

When Asterisk sends a re-invite initiating T.38 faxing
and the endpoint responds with a m=image line and zero
port, a crash will occur in Asterisk. This is a reoccurrence
of AST-2019-004.

OSVersionArchitecturePackageVersionFilename
FreeBSDanynoarchasterisk16< 16.16.2UNKNOWN
FreeBSDanynoarchasterisk18< 18.2.2UNKNOWN

4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.006 Low

EPSS

Percentile

79.2%