Design/Logic Flaw

2019-11-2617:15:00

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9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

8.2 High

AI Score

Confidence

High

6.4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.011 Low

EPSS

Percentile

83.9%

JSON

An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn’t go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.

CPENameOperatorVersion
ubuntu_linuxeq16.04
ubuntu_linuxeq18.04
ubuntu_linuxeq19.04
ubuntu_linuxeq19.10
ubuntu_linuxeq18.04
ubuntu_linuxeq16.04
debian_linuxeq9.0
debian_linuxeq10.0
fedoraeq30
fedoraeq31

Name	Operator	Version
ubuntu_linux	eq	16.04
ubuntu_linux	eq	18.04
ubuntu_linux	eq	19.04
ubuntu_linux	eq	19.10
ubuntu_linux	eq	18.04
ubuntu_linux	eq	16.04
debian_linux	eq	9.0
debian_linux	eq	10.0
fedora	eq	30
fedora	eq	31