Resource exhaustion in Varnish Cache and Varnish Enterprise - CVE-2024-30156

Vulnerability identifier: #VU88221

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-30156

CWE-ID: CWE-400

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 application does not properly control consumption of internal resources when handling HTTP/2 requests. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Varnish Cache
Varnish Enterprise
Oracle Linux
Anolis OS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
openEuler
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
varnish-modules
rh-varnish6-varnish-modules (Red Hat package)
rh-varnish6-varnish (Red Hat package)
varnish
varnish-devel
varnish-docs
varnish (Red Hat package)
varnish-debuginfo
varnish-debugsource
varnish-help

Install updates from vendor's website.

Varnish Cache - addressed in versions 6.0.13, 7.3.2, 7.4.3
Varnish Enterprise - update to 6.0.12r6
varnish-modules - update to 0.15.0-6
rh-varnish6-varnish-modules (Red Hat package) - update to 0.15.0-8.el7
rh-varnish6-varnish (Red Hat package) - update to 6.0.13-1.el7
varnish - update to 6.0.13-1.0.1
varnish-devel - update to 6.0.13-1.0.1
varnish-docs - update to 6.0.13-1.0.1
varnish (Red Hat package) - addressed in versions 6.6.2-2.el9_0.3, 6.6.2-3.el9_2.2, 6.6.2-4.el9_3.1
varnish - update to 7.4.3-1
varnish-debuginfo - update to 7.4.3-1
varnish-debugsource - update to 7.4.3-1
varnish-devel - update to 7.4.3-1
varnish-help - update to 7.4.3-1

• https://varnish-cache.org/security/VSV00014.html
• https://varnish-cache.org/docs/7.5/whats-new/changes-7.5.html#security

• Denial of service in Varnish Cache and Varnish Enterprise
• Red Hat Software Collections update for rh-varnish6-varnish
• Red Hat Enterprise Linux 9 update for varnish
• openEuler update for varnish
• Multiple vulnerabilities in Oracle Linux
• Red Hat Enterprise Linux 8 update for varnish-6.0.13-1 module
• Red Hat Enterprise Linux 9.0 Extended Update Support update for varnish
• Red Hat Enterprise Linux 9.2 Extended Update Support update for varnish
• Red Hat Enterprise Linux 8.8 Extended Update Support update for the varnish:6 module
• Red Hat Enterprise Linux 8 update for the varnish:6 module
• Red Hat Enterprise Linux 8 update for the varnish:6 module
• Red Hat Enterprise Linux 8 update for the varnish:6 module
• Anolis OS update for varnish module