CVE-2019-18678

2019-11-2600:00:00

ubuntu.com

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.007 Low

EPSS

Percentile

80.7%

JSON

An issue was discovered in Squid 3.x and 4.x through 4.8. It allows
attackers to smuggle HTTP requests through frontend software to a Squid
instance that splits the HTTP Request pipeline differently. The resulting
Response messages corrupt caches (between a client and Squid) with
attacker-controlled content at arbitrary URLs. Effects are isolated to
software between the attacker client and Squid. There are no effects on
Squid itself, nor on any upstream servers. The issue is related to a
request header containing whitespace between a header name and a colon.

OSVersionArchitecturePackageVersionFilename
ubuntu19.04noarchsquid< 4.4-1ubuntu2.3UNKNOWN
ubuntu19.10noarchsquid< 4.8-1ubuntu2.1UNKNOWN
ubuntu20.04noarchsquid< 4.9-2ubuntu1UNKNOWN
ubuntu20.10noarchsquid< 4.9-2ubuntu1UNKNOWN
ubuntu21.04noarchsquid< 4.9-2ubuntu1UNKNOWN
ubuntu18.04noarchsquid3< 3.5.27-1ubuntu1.4UNKNOWN
ubuntu16.04noarchsquid3< 3.5.12-1ubuntu7.9UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	19.04	noarch	squid	< 4.4-1ubuntu2.3	UNKNOWN
ubuntu	19.10	noarch	squid	< 4.8-1ubuntu2.1	UNKNOWN
ubuntu	20.04	noarch	squid	< 4.9-2ubuntu1	UNKNOWN
ubuntu	20.10	noarch	squid	< 4.9-2ubuntu1	UNKNOWN
ubuntu	21.04	noarch	squid	< 4.9-2ubuntu1	UNKNOWN
ubuntu	18.04	noarch	squid3	< 3.5.27-1ubuntu1.4	UNKNOWN
ubuntu	16.04	noarch	squid3	< 3.5.12-1ubuntu7.9	UNKNOWN