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Vulnerability · Published Apr 10, 2024 · Assigned by apache

CVE-2024-31309Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack

High 7.5

In plain English

A high-severity improper input validation in Apache Traffic Server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 94.6% (higher than 99.9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)94.6%top 0.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected. Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases. Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.21trafficserver99.2.4-r0ALPINE-CVE-2024-31309
Alpine:v3.22trafficserver99.2.4-r0ALPINE-CVE-2024-31309
Alpine:v3.23trafficserver99.2.4-r0ALPINE-CVE-2024-31309
Alpine:v3.24trafficserver99.2.4-r0ALPINE-CVE-2024-31309
Debian:12trafficserver9.2.4+ds-0+deb12u1DEBIAN-CVE-2024-31309
Debian:12trafficserver9.2.4+ds-0+deb12u1DSA-5659-1
Ubuntu:24.04:LTStrafficserverno fix listedUBUNTU-CVE-2024-31309

Affected products (as reported)

VendorProductVersions
Apache Software Foundation Apache Traffic Server 8.0.0 – through 8.1.99.0.0 – through 9.2.3

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References