High severity · published Jan 11, 2021
CVE-2020-17509
ATS negative cache option is vulnerable to a cache poisoning attack
7.5
CVSS
1.8%
EPSS
No
On KEV
Description
ATS negative cache option is vulnerable to a cache poisoning attack. If you have this option enabled, please upgrade or disable this feature. Apache Traffic Server versions 7.0.0 to 7.1.11 and 8.0.0 to 8.1.0 are affected.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TS
Traffic Server · Apache
6.0.0 through 6.2.3; 7.0.0 through 7.1.10; 8.0.0 through 8.0.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-17509
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-17509
Mailing List
https://lists.apache.org/thread.html/raa9f0589c26c4d146646425e51e2a33e1457492df9f7ea2019daa6d3%40%3Cannounce.trafficserver.apache.org%3E
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