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cveMitreCVE-2019-12527
HistoryJul 11, 2019 - 7:15 p.m.

CVE-2019-12527

2019-07-1119:15:13
CWE-787
mitre
web.nvd.nist.gov
239
squid
cve-2019-12527
buffer overflow
security vulnerability
nvd

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.2

Confidence

High

EPSS

0.023

Percentile

89.8%

An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn’t greater than the buffer, leading to a heap-based buffer overflow with user controlled data.

Affected configurations

Nvd
Node
squid-cachesquidRange4.0.234.7
Node
fedoraprojectfedoraMatch29
Node
debiandebian_linuxMatch10.0
Node
canonicalubuntu_linuxMatch16.04esm
OR
canonicalubuntu_linuxMatch18.04lts
OR
canonicalubuntu_linuxMatch19.04
Node
redhatenterprise_linuxMatch8.0
OR
redhatenterprise_linux_eusMatch8.1
OR
redhatenterprise_linux_eusMatch8.2
OR
redhatenterprise_linux_eusMatch8.4
OR
redhatenterprise_linux_eusMatch8.6
OR
redhatenterprise_linux_server_ausMatch8.2
OR
redhatenterprise_linux_server_ausMatch8.4
OR
redhatenterprise_linux_server_ausMatch8.6
OR
redhatenterprise_linux_server_tusMatch8.2
OR
redhatenterprise_linux_server_tusMatch8.4
OR
redhatenterprise_linux_server_tusMatch8.6
VendorProductVersionCPE
squid-cachesquidcpe:/a:squid-cache:squid::::

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.2

Confidence

High

EPSS

0.023

Percentile

89.8%