CVE-2021-27577 in Apache and Debian Products
Published on June 29, 2021
Incorrect handling of url fragment leads to cache poisoning
Weakness Type
What is a HTTP Request Smuggling Vulnerability?
When malformed or abnormal HTTP requests are interpreted by one or more entities in the data flow between the user and the web server, such as a proxy or firewall, they can be interpreted inconsistently, allowing the attacker to "smuggle" a request to one device without the other device being aware of it.
CVE-2021-27577 has been classified to as a HTTP Request Smuggling vulnerability or weakness.
Products Associated with CVE-2021-27577
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Affected Versions
Apache Software Foundation Apache Traffic Server Version Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1 is affected by CVE-2021-27577Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.