CVE-2021-32566: Specific sequence of HTTP/2 frames can cause ATS to crash
First published: Wed Jun 30 2021(Updated: )
Improper Input Validation vulnerability in HTTP/2 of Apache Traffic Server allows an attacker to DOS the server. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.
Credit: security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apache Traffic Server | >=7.0.0<=7.1.12 | |
| Apache Traffic Server | >=8.0.0<=8.1.1 | |
| Apache Traffic Server | >=9.0.0<=9.0.1 | |
| Debian Debian Linux | =10.0 | |
| debian/trafficserver | 8.0.2+ds-1+deb10u6 8.1.7-0+deb10u2 8.1.7+ds-1~deb11u1 9.2.0+ds-2+deb12u1 9.2.2+ds-1 |
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Reference Links
- https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cannounce.trafficserver.apache.org%3E
- https://github.com/apache/trafficserver/pull/7945
- https://github.com/apache/trafficserver/commit/034965e0fd0def114658f0048d953d1c16a95bed
- https://github.com/apache/trafficserver/commit/b82a3d192f995fb9d78e1c44d51d9acca4783277
- https://security-tracker.debian.org/tracker/CVE-2021-32566
- https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3E
- https://www.debian.org/security/2021/dsa-4957
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-32566.
What is the severity level of CVE-2021-32566?
The severity level of CVE-2021-32566 is high with a score of 7.5.
What is the affected software?
The affected software is Apache Traffic Server versions 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, and 9.0.0 to 9.0.1.
How does CVE-2021-32566 impact the server?
CVE-2021-32566 allows an attacker to perform a denial-of-service (DoS) attack on the server.
Where can I find more information about CVE-2021-32566?
You can find more information about CVE-2021-32566 at the following references: [link1], [link2], [link3].
- collector/security-tracker-debian
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/title
- agent/references
- agent/author
- agent/last-modified-date
- agent/weakness
- agent/description
- agent/tags
- agent/event
- agent/first-publish-date
- package-manager/debian
- vendor/apache
- canonical/apache traffic server
- version/apache traffic server/7.0.0
- version/apache traffic server/7.1.12
- version/apache traffic server/8.0.0
- version/apache traffic server/8.1.1
- version/apache traffic server/9.0.0
- version/apache traffic server/9.0.1
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0