PT-2021-3573 · Apache · Apache Traffic Server

Katsutoshi Ikenoya · Published 2021-06-24 · Updated 2021-09-20 · CVE-2021-32566

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Apache Traffic Server versions 7.0.0 through 7.1.12 Apache Traffic Server versions 8.0.0 through 8.1.1 Apache Traffic Server versions 9.0.0 through 9.0.1

Description The issue is caused by improper input validation in the HTTP/2 component of Apache Traffic Server. This allows a remote attacker to cause a denial of service.

Recommendations For Apache Traffic Server versions 7.0.0 through 7.1.12, update to a version outside of this range to resolve the issue. For Apache Traffic Server versions 8.0.0 through 8.1.1, update to a version outside of this range to resolve the issue. For Apache Traffic Server versions 9.0.0 through 9.0.1, update to a version outside of this range to resolve the issue. As a temporary workaround, consider restricting access to the HTTP/2 component until a patch is available.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2021-03674

CVE-2021-32566

DSA-4957-1

Affected Products

Apache Traffic Server

References · 21

• https://osv.dev/vulnerability/DSA-4957-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-32566 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-32566 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03674 · Security Note
• https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3E · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-32566 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-32566 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-32566 · Security Note
• https://debian.org/security/2021/dsa-4957 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-32566 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-32566 · Vendor Advisory
• https://github.com/apache/trafficserver/commit/b82a3d192f995fb9d78e1c44d51d9acca4783277 · Note
• https://github.com/apache/trafficserver/pull/7945 · Note
• https://github.com/apache/trafficserver/commit/034965e0fd0def114658f0048d953d1c16a95bed · Note
• https://t.me/cvenotify/16886 · Telegram Post