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freebsdFreeBSDB330DB5F-7225-11EB-8386-001999F8D30B
HistoryJan 04, 2021 - 12:00 a.m.

asterisk -- Remote crash in res_pjsip_diversion

2021-01-0400:00:00
vuxml.freebsd.org
10

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.008 Low

EPSS

Percentile

82.1%

The Asterisk project reports:

If a registered user is tricked into dialing a malicious
number that sends lots of 181 responses to Asterisk, each
one will cause a 181 to be sent back to the original
caller with an increasing number of entries in the
“Supported” header. Eventually the number of entries in
the header exceeds the size of the entry array and causes
a crash.

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.008 Low

EPSS

Percentile

82.1%