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ubuntucveUbuntu.comUB:CVE-2019-12527
HistoryJul 11, 2019 - 12:00 a.m.

CVE-2019-12527

2019-07-1100:00:00
ubuntu.com
ubuntu.com
9

8.8 High

CVSS3

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.039 Low

EPSS

Percentile

91.8%

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.

Notes

Author Note
mdeslaur code in 3.5 is different and doesn’t look vulnerable.
OSVersionArchitecturePackageVersionFilename
ubuntu19.04noarchsquid< 4.4-1ubuntu2.2UNKNOWN

8.8 High

CVSS3

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.039 Low

EPSS

Percentile

91.8%