Vulnerability · Published Mar 24, 2024 · Assigned by mitre
CVE-2024-30156
High 7.5
In plain English
A high-severity resource allocation without limits in the varnish package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.7% (higher than 90% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)3.7%top 10.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Varnish Cache before 7.3.2 and 7.4.x before 7.4.3 (and before 6.0.13 LTS), and Varnish Enterprise 6 before 6.0.12r6, allows credits exhaustion for an HTTP/2 connection control flow window, aka a Broke Window Attack.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | varnish | 6.0.13-1.module_el8.9.0+3786+e8a73bbf.alma.1 | ALSA-2024:1690 |
| AlmaLinux:9 | varnish | 6.6.2-4.el9_3.1 | ALSA-2024:1691 |
| AlmaLinux:8 | varnish-devel | 6.0.13-1.module_el8.9.0+3786+e8a73bbf.alma.1 | ALSA-2024:1690 |
| AlmaLinux:9 | varnish-devel | 6.6.2-4.el9_3.1 | ALSA-2024:1691 |
| AlmaLinux:8 | varnish-docs | 6.0.13-1.module_el8.9.0+3786+e8a73bbf.alma.1 | ALSA-2024:1690 |
| AlmaLinux:9 | varnish-docs | 6.6.2-4.el9_3.1 | ALSA-2024:1691 |
| AlmaLinux:8 | varnish-modules | 0.15.0-6.module_el8.6.0+3089+dac88e97 | ALSA-2024:1690 |
| AlmaLinux:8 | varnish-modules | 0.15.0-6.module_el8.5.0+2620+03a0c2cc | ALSA-2024:1690 |
| AlmaLinux:8 | varnish-modules | 0.15.0-6.module_el8.5.0+76+a10ffa55 | ALSA-2024:1690 |
| Alpine:v3.20 | varnish | 7.5.0-r0 | ALPINE-CVE-2024-30156 |
| Alpine:v3.21 | varnish | 7.5.0-r0 | ALPINE-CVE-2024-30156 |
| Alpine:v3.22 | varnish | 7.5.0-r0 | ALPINE-CVE-2024-30156 |
| Alpine:v3.23 | varnish | 7.5.0-r0 | ALPINE-CVE-2024-30156 |
| Alpine:v3.24 | varnish | 7.5.0-r0 | ALPINE-CVE-2024-30156 |
| Debian:12 | varnish | no fix listed | DEBIAN-CVE-2024-30156 |
| Debian:13 | varnish | 7.5.0-1 | DEBIAN-CVE-2024-30156 |
| Rocky Linux:8 | varnish | 0:6.0.13-1.module+el8.9.0+1777+0acf9965 | RLSA-2024:1690 |
| Rocky Linux:9 | varnish | 0:6.6.2-4.el9_3.1 | RLSA-2024:1691 |
| Rocky Linux:8 | varnish-modules | 0:0.15.0-6.module+el8.5.0+677+2a78a869 | RLSA-2024:1690 |
| Ubuntu:22.04:LTS | varnish | no fix listed | UBUNTU-CVE-2024-30156 |
| Ubuntu:24.04:LTS | varnish | no fix listed | UBUNTU-CVE-2024-30156 |
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H