CVE-2021-27577 Incorrect handling of url fragment leads to cache poisoning
An attacker can poison the cache in Apache Traffic Server by exploiting incorrect URL fragment handling, potentially serving malicious content to users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-27577?
CVE-2021-27577 is a high-severity vulnerability in Apache Traffic Server, published on 29 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-444
Which versions are affected by CVE-2021-27577?
It affects 2 products.
Products include Apache Traffic Server, Debian Debian Linux.
How do I fix CVE-2021-27577?
Upgrade to a fixed version.
Is CVE-2021-27577 being exploited?
There is no known exploitation of CVE-2021-27577 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2021-27577, GHSA-m6m2-j477-jfg8, UBUNTU-CVE-2021-27577.