CVE-2019-18679

CVSS V2 Medium 5 CVSS V3 High 7.5

Description

An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.

Overview

CVE ID
CVE-2019-18679

Assigner
cve@mitre.org

Vulnerability Status
Modified

Published Version
2019-11-26T17:15:13

Last Modified Date
2020-07-11T00:15:14

Weakness Enumerations

CWE	URL
CWE-200	http://cwe.mitre.org/data/definitions/200.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:squid-cache:squid::::::::	1	OR	2.0	2.7
cpe:2.3:a:squid-cache:squid::::::::	1	OR	3.0	3.5.28
cpe:2.3:a:squid-cache:squid::::::::	1	OR	4.0	4.8
cpe:2.3:a:squid-cache:squid:2.7:stable2::::::	1	OR
cpe:2.3:a:squid-cache:squid:2.7:stable3::::::	1	OR
cpe:2.3:a:squid-cache:squid:2.7:stable4::::::	1	OR
cpe:2.3:a:squid-cache:squid:2.7:stable5::::::	1	OR
cpe:2.3:a:squid-cache:squid:2.7:stable6::::::	1	OR
cpe:2.3:a:squid-cache:squid:2.7:stable7::::::	1	OR
cpe:2.3:a:squid-cache:squid:2.7:stable8::::::	1	OR
cpe:2.3:a:squid-cache:squid:2.7:stable9::::::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:19.04:::::::*	1	OR
cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:8.0:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:30:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:31:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:P/I:N/A:N

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
NONE

Base Score
5

Severity
MEDIUM

Exploitability Score
10

Impact Score
2.9

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
NONE

Base Score
7.5

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
3.6

References

Reference URL	Reference Tags
https://github.com/squid-cache/squid/pull/491	Patch Third Party Advisory
http://www.squid-cache.org/Advisories/SQUID-2019_11.txt	Third Party Advisory
http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch	Release Notes
https://bugzilla.suse.com/show_bug.cgi?id=1156324	Issue Tracking Third Party Advisory
https://usn.ubuntu.com/4213-1/	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html	Third Party Advisory
https://security.gentoo.org/glsa/202003-34
https://www.debian.org/security/2020/dsa-4682
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2019-18679
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18679

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:41:03				Added to TrackCVE
2022-12-04 07:07:03	2019-11-26T17:15Z	2019-11-26T17:15:13	CVE Published Date	updated
2022-12-04 07:07:03		2020-07-11T00:15:14	CVE Modified Date	updated
2022-12-04 07:07:03		Modified	Vulnerability Status	updated