Denial of service in Squid - CVE-2018-1000027

Vulnerability identifier: #VU10384

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-1000027

CWE-ID: CWE-284

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to unspecified error. A remote attacker can cause denial of service issue in HTTP Message processing.

Squid
Debian Linux
Amazon Linux AMI
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Workstation
Ubuntu
Fedora
squid3 (Ubuntu package)
squid (Red Hat package)
squid (Alpine package)
squid (Ubuntu package)
squid

Install update from vendor's website.

squid3 (Ubuntu package) - update to 3.1.19-1ubuntu3.12.04.9
squid (Red Hat package) - update to 3.5.20-15.el7
squid (Alpine package) - update to 3.5.27-r0
squid (Ubuntu package) - update to Ubuntu Pro (Infra-only)
squid - addressed in versions 4.0.23-1.fc26, 4.0.23-2.fc27

• http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2018_1.patch
• http://www.squid-cache.org/Versions/v4/changesets/SQUID-2018_2.patch

• Ubuntu update for Squid
• Debian update for squid3
• Amazon Linux AMI update for squid
• Ubuntu update for Squid
• Red Hat Enterprise Linux 7 update for squid
• Denial of service in squid (Alpine package)
• Ubuntu update for squid3
• Fedora 27 update for squid
• Fedora 26 update for squid