CVE-2021-27577

Incorrect handling of url fragment leads to cache poisoning

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.92% Top 30%
Vendor Advisory debian.org Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Traffic Server
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3E mailing list vendor advisory
https://www.debian.org/security/2021/dsa-4957 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-27577?
CVE-2021-27577 has been scored as a high severity vulnerability.
How to fix CVE-2021-27577?
To fix CVE-2021-27577, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27577 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-27577 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-27577?
CVE-2021-27577 affects Apache Software Foundation Apache Traffic Server.
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