CVE-2021-31806

2021-05-2700:00:00

ubuntu.com

squid

dos

vulnerability

http range request

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

CVSS3

6.5

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

EPSS

0.916

Percentile

98.9%

JSON

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a
memory-management bug, it is vulnerable to a Denial of Service attack
(against all clients using the proxy) via HTTP Range request processing.

Bugs

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchsquid< 4.10-1ubuntu1.4UNKNOWN
ubuntu20.10noarchsquid< 4.13-1ubuntu2.2UNKNOWN
ubuntu21.04noarchsquid< 4.13-1ubuntu4.1UNKNOWN
ubuntu21.10noarchsquid< 4.13-10ubuntu1UNKNOWN
ubuntu22.04noarchsquid< 4.13-10ubuntu1UNKNOWN
ubuntu22.10noarchsquid< 4.13-10ubuntu1UNKNOWN
ubuntu23.04noarchsquid< 4.13-10ubuntu1UNKNOWN
ubuntu23.10noarchsquid< 4.13-10ubuntu1UNKNOWN
ubuntu24.04noarchsquid< 4.13-10ubuntu1UNKNOWN
ubuntu18.04noarchsquid3< 3.5.27-1ubuntu1.11UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	20.04	noarch	squid	< 4.10-1ubuntu1.4	UNKNOWN
ubuntu	20.10	noarch	squid	< 4.13-1ubuntu2.2	UNKNOWN
ubuntu	21.04	noarch	squid	< 4.13-1ubuntu4.1	UNKNOWN
ubuntu	21.10	noarch	squid	< 4.13-10ubuntu1	UNKNOWN
ubuntu	22.04	noarch	squid	< 4.13-10ubuntu1	UNKNOWN
ubuntu	22.10	noarch	squid	< 4.13-10ubuntu1	UNKNOWN
ubuntu	23.04	noarch	squid	< 4.13-10ubuntu1	UNKNOWN
ubuntu	23.10	noarch	squid	< 4.13-10ubuntu1	UNKNOWN
ubuntu	24.04	noarch	squid	< 4.13-10ubuntu1	UNKNOWN
ubuntu	18.04	noarch	squid3	< 3.5.27-1ubuntu1.11	UNKNOWN