PT-2021-3575 · Apache · Apache Traffic Server

Published 2021-06-24 · Updated 2021-09-20 · CVE-2021-32565

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

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 related to invalid values in the Content-Length header sent to Apache Traffic Server, allowing an attacker to smuggle requests. This can potentially impact the integrity of protected information. The vulnerability is associated with deficiencies in HTTP request processing.

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 Content-Length header to minimize the risk of exploitation.

Fix

HTTP Request/Response Smuggling

Weakness Enumeration

CWE-444

Related Identifiers

BDU:2021-03676

CVE-2021-32565

DSA-4957-1

Affected Products

Apache Traffic Server

References · 18

• https://nvd.nist.gov/vuln/detail/CVE-2021-32565 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-32565 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03676 · Security Note
• https://osv.dev/vulnerability/DSA-4957-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-32565 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-32565 · Vendor Advisory
• https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3E · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-32565 · Vendor Advisory
• https://debian.org/security/2021/dsa-4957 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-32565 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-32565 · Security Note
• https://github.com/apache/trafficserver/commit/b82a3d192f995fb9d78e1c44d51d9acca4783277 · Note
• https://github.com/apache/trafficserver/pull/7945 · Note
• https://github.com/apache/trafficserver/commit/668d0f8668fec1cd350b0ceba3f7f8e4020ae3ca · Note
• https://t.me/cvenotify/19341 · Telegram Post