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Mend.io Vulnerability Database

CVE-2019-12527

Date: July 11, 2019

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.

Language: C++

Severity Score

8.8

Related Resources (17)

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-12527

Url: https://seclists.org/bugtraq/2019/Aug/42

Url: https://usn.ubuntu.com/4065-1/

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html

Url: https://github.com/squid-cache/squid/commits/v4

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html

Url: https://access.redhat.com/errata/RHSA-2019:2593

Url: http://www.securityfocus.com/bid/109143

Url: https://security-tracker.debian.org/tracker/CVE-2019-12527

Url: http://www.squid-cache.org/Versions/v4/changesets/

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-12527

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/

Url: https://www.debian.org/security/2019/dsa-4507

Url: http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch

Url: https://access.redhat.com/security/cve/CVE-2019-12527

Url: https://www.mend.io/vulnerability-database/CVE-2019-12527

Severity Score

8.8

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	8.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	6.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2019-12527

Date: July 11, 2019

Language: C++

Severity Score

Related Resources (17)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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