PT-2021-4096 · Apache · Apache Traffic Server

Brian Olsen · Published 2021-05-01 · Updated 2021-05-25 · CVE-2021-27737

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Apache Traffic Server version 9.0.0

Description The issue is related to a remote DOS attack on the experimental Slicer plugin. It involves incorrect resource release, which can be exploited by a remote attacker to cause a denial of service.

Recommendations For Apache Traffic Server version 9.0.0, consider disabling the experimental Slicer plugin as a temporary workaround to minimize the risk of exploitation.

Fix

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

BDU:2021-04678

CVE-2021-27737

Affected Products

Apache Traffic Server

References · 14

• https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525%40%3Cannounce.trafficserver.apache.org%3E · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27737 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27737 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-27737 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-27737 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-04678 · Security Note
• https://ubuntu.com/security/CVE-2021-27737 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-27737 · Vendor Advisory
• https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cannounce.trafficserver.apache.org%3E · Note
• https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cusers.trafficserver.apache.org%3E · Note
• https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525%40%3Cdev.trafficserver.apache.org%3E · Note
• https://t.me/cvenotify/15004 · Telegram Post
• https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cdev.trafficserver.apache.org%3E · Note
• https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525%40%3Cusers.trafficserver.apache.org%3E · Note