CVE-2020-17522: apache traffic_control
Vulnerability summary
CVE-2020-17522 is a medium (CVSS 5.8) vulnerability in apache traffic_control. EPSS estimates a 3.98% chance of exploitation in the next 30 days, higher than 90.4% of scored vulnerabilities.
Timeline
- 26-01-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · GoEcosystem advisory · calculated5.8MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EPSS trend
Probability
3.98%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
+0.05 pp
From 3.93% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Apache1 product
- traffic_control≥ 3.0.0, ≤ 3.1.0 | ≥ 4.0.0, ≤ 4.1.0
Github.com/apache1 product
- trafficcontrol< 5.0.0
2 vendors · 2 products
