CVE-2019-12527

HIGH
8.8
CVSS Score
Published: July 11, 2019 at 06:10 PM UTC
Updated: June 17, 2026 at 02:14 AM UTC
8 products affected across 5 vendorsDebian LinuxFedoraUbuntu Linux

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Severity
HIGH8.8
Exploit prediction
EPSS 49%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (11)

x_refsource_CONFIRMVendor Advisoryx_refsource_SUSEBroken Link
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
VDB Entryx_refsource_BIDBroken LinkThird Party Advisory
http://www.securityfocus.com/bid/109143
x_refsource_MISCx_refsource_CONFIRMVendor Advisory
http://www.squid-cache.org/Versions/v4/changesets/
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:2593
x_refsource_MISCx_refsource_CONFIRMPatchThird Party Advisory
https://github.com/squid-cache/squid/commits/v4

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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