CVE-2020-17522 json
Cache Manipulation Attack in Apache Traffic Control
published 2021-01-26 5 y ago modified 2026-06-17 4 mo ago also GHSA-pw59-4qgf-jxr8 , EUVD-2021-1372
- cvss
- 5.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.0%
- EPSS 4.0% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
When ORT (now via atstccfg) generates ip_allow.config files in Apache Traffic Control 3.0.0 to 3.1.0 and 4.0.0 to 4.1.0, those files include permissions that allow bad actors to push arbitrary content into and remove arbitrary content from CDN cache servers. Additionally, these permissions are potentially extended to IP addresses outside the desired range, resulting in them being granted to clients possibly outside the CDN arcitechture.
Patch / fix
Exploit prediction
3.98% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/apache/trafficcontrol | <5.0.0 |
5.0.0 |
Affected products
- n/a Apache Traffic Control
Classification
References
-
github.com
/apache/trafficcontrol/commit/492290d810e9608afb5d265b98cd3f3e153e776b
web
-
lists.apache.org
/thread.html/r3de212a3da73bcf98fa2db7eafb75b2eb8e131ff466e6efc4284df09%40%3Cdev.trafficcontrol.apache.org%3E
web, mailing-list, vendor-advisory
-
lists.apache.org
/thread.html/r3c675031ac220b5eae64a9c84a03ee60045c6045738607dca4a96cb8%40%3Ccommits.trafficcontrol.apache.org%
mailing-list
-
lists.apache.org
/thread.html/rc8bfd7d4f71d61e9193efcd4699eccbab3c202ec1d75ed9d502f08bf%40%3Ccommits.trafficcontrol.apache.org%
mailing-list
-
nvd.nist.gov
/vuln/detail/CVE-2020-17522
advisory
-
github.com
/apache/trafficcontrol
package
-
lists.apache.org
/thread.html/r3c675031ac220b5eae64a9c84a03ee60045c6045738607dca4a96cb8@%3Ccommits.trafficcontrol.apache.org%3E
web
-
lists.apache.org
/thread.html/rc8bfd7d4f71d61e9193efcd4699eccbab3c202ec1d75ed9d502f08bf@%3Ccommits.trafficcontrol.apache.org%3E
web
Sources
- CVE List CVE-2020-17522
- GitHub Advisory GHSA-pw59-4qgf-jxr8
- NVD CVE-2020-17522
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.