CVE-2021-27577: Incorrect handling of url fragment leads to cache poisoning
First published: Tue Jun 29 2021(Updated: )
Incorrect handling of url fragment vulnerability of Apache Traffic Server allows an attacker to poison the cache. 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 | =8.0 | |
| 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%3Cusers.trafficserver.apache.org%3E
- https://www.debian.org/security/2021/dsa-4957
- 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/2b13eb33794574e62249997b4ba654d943a10f2d
- https://github.com/apache/trafficserver/commit/b82a3d192f995fb9d78e1c44d51d9acca4783277
- https://security-tracker.debian.org/tracker/CVE-2021-27577
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-27577.
What is the severity level of CVE-2021-27577?
The severity level of CVE-2021-27577 is high.
How does the vulnerability affect Apache Traffic Server?
The vulnerability affects Apache Traffic Server version 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, and 9.0.0 to 9.0.1.
How can an attacker exploit this vulnerability?
An attacker can exploit this vulnerability to poison the cache of Apache Traffic Server.
What are the recommended versions to fix this vulnerability?
The recommended versions to fix this vulnerability are 8.0.2+ds-1+deb10u6, 8.1.7-0+deb10u2, 8.1.7+ds-1~deb11u1, 9.2.0+ds-2+deb12u1, and 9.2.2+ds-1.
- collector/nvd-index
- collector/security-tracker-debian
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/references
- agent/weakness
- agent/severity
- agent/last-modified-date
- agent/title
- agent/tags
- agent/event
- agent/description
- agent/first-publish-date
- 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/8.0
- package-manager/debian