NULL pointer derefenrece in Squid - CVE-2018-1000024

Vulnerability identifier: #VU10383

CSH Severity: Medium

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

CVE-ID: CVE-2018-1000024

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect pointer handling when processing ESI responses. A remote attacker can supply a specially crafted response to the vulnerable server and trigger application crash.

Squid
Debian Linux
Amazon Linux AMI
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
Red Hat Enterprise Linux Server
Ubuntu
Fedora
squid3 (Ubuntu package)
squid (Alpine package)
squid (Red Hat package)
squid (Ubuntu package)
squid

Install update from vendor's website.

Squid - addressed in versions 3.5.28, 4.0.23
squid3 (Ubuntu package) - update to 3.1.19-1ubuntu3.12.04.9
squid (Alpine package) - update to 3.5.27-r0
squid (Red Hat package) - update to 3.5.20-15.el7
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/Advisories/SQUID-2018_1.txt

• Denial of Service in Squid
• 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
• NULL pointer derefenrece in squid (Alpine package)
• Ubuntu update for squid3
• Fedora 27 update for squid
• Fedora 26 update for squid