CVE-2019-12527

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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3.0 : HIGH

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

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://www.squid-cache.org/Versions/v4/changesets/	Vendor Advisory
http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch	Patch Vendor Advisory
https://github.com/squid-cache/squid/commits/v4	Patch Third Party Advisory
http://www.securityfocus.com/bid/109143	Third Party Advisory
https://usn.ubuntu.com/4065-1/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
https://www.debian.org/security/2019/dsa-4507
https://seclists.org/bugtraq/2019/Aug/42
https://access.redhat.com/errata/RHSA-2019:2593
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*

Information

Published : 2019-07-11 19:15

Updated : 2020-08-24 17:37

NVD link : CVE-2019-12527

Mitre link : CVE-2019-12527

JSON object : View

Products Affected

squid-cache

squid

CWE

CWE-787

Out-of-bounds Write

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