VulnerabilityModified
CVE-2021-27577
Incorrect handling of url fragment vulnerability of Apache Traffic Server allows an attacker to poison the cache.
HIGH 7.5EPSS 3.54%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 3.54% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-444
- Affected
- apache/traffic server · debian/debian linux
- Source
- security@apache.org
References
- https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3EMailing List, Vendor Advisory
- https://www.debian.org/security/2021/dsa-4957Third Party Advisory
- https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3EMailing List, Vendor Advisory
- https://www.debian.org/security/2021/dsa-4957Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.