CVE-2021-31878

2021-07-3000:00:00

ubuntu.com

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

0.003 Low

EPSS

Percentile

70.1%

JSON

An issue was discovered in PJSIP in Asterisk before 16.19.1 and before
18.5.1. To exploit, a re-INVITE without SDP must be received after Asterisk
has sent a BYE request.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchasterisk< anyUNKNOWN
ubuntu20.04noarchasterisk< anyUNKNOWN
ubuntu22.04noarchasterisk< anyUNKNOWN
ubuntu23.10noarchasterisk< anyUNKNOWN
ubuntu24.04noarchasterisk< anyUNKNOWN
ubuntu16.04noarchasterisk< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	asterisk	< any	UNKNOWN
ubuntu	20.04	noarch	asterisk	< any	UNKNOWN
ubuntu	22.04	noarch	asterisk	< any	UNKNOWN
ubuntu	23.10	noarch	asterisk	< any	UNKNOWN
ubuntu	24.04	noarch	asterisk	< any	UNKNOWN
ubuntu	16.04	noarch	asterisk	< any	UNKNOWN