PT-2019-5770 · Squid+7 · Squid+8

David Fifield · Published 2019-11-14 · Updated 2024-06-15 · CVE-2019-18679

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Squid versions 2.x through 4.8

Description The issue is related to incorrect data management in HTTP Digest Authentication processing, leading to information disclosure. Nonce tokens contain raw byte values of pointers within heap memory allocation, which reduces ASLR protections and may aid attackers in isolating memory areas for remote code execution attacks. This vulnerability allows a remote attacker to access confidential data.

Recommendations For Squid versions 2.x through 4.8, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

ALSA-2020:4743

ALT-PU-2020-1479

ALT-PU-2020-1494

BDU:2021-01719

CESA-2020_4743

CVE-2019-18679

DLA-2028-1

DLA-2278-1

DSA-4682-1

MGASA-2019-0382

OPENSUSE-SU-2019:2540-1

OPENSUSE-SU-2019:2541-1

OPENSUSE-SU-2019_2540-1

OPENSUSE-SU-2019_2541-1

OPENSUSE-SU-2024:11403-1

RHSA-2020:4743

RHSA-2020_4743

RLSA-2020:4743

SUSE-SU-2019:2975-1

SUSE-SU-2019:3067-1

SUSE-SU-2020:0661-1

SUSE-SU-2020:14460-1

USN-4213-1

Affected Products

Alt Linux

Almalinux

Centos

Red Hat

Rocky Linux

Squid

Squid Cache

Suse

Ubuntu

References · 166

• https://github.com/squid-cache/squid/pull/491 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2019-18679 · Security Note
• https://osv.dev/vulnerability/MGASA-2019-0382 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:0661-1 · Vendor Advisory
• https://usn.ubuntu.com/4213-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01719 · Security Note
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20211019SE81 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-18679 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:14460-1 · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2020-4743.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-18679 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-12854 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4213-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11403-1 · Vendor Advisory