CVE-2021-3116
HIGHCVSS 7.5/10EPSS 1.67%
Last modified
CVE-2021-3116 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. before_upstream_connection in AuthPlugin in http/proxy/auth.py in proxy.py before 2.3.1 accepts incorrect Proxy-Authorization header data because of a boolean confusion (and versus or).. EPSS estimates a 1.67% chance of exploitation in the next 30 days.
Description
before_upstream_connection in AuthPlugin in http/proxy/auth.py in proxy.py before 2.3.1 accepts incorrect Proxy-Authorization header data because of a boolean confusion (and versus or).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Proxy.Py Project | Proxy.Py | < 2.3.1 |
References
- https://cardaci.xyz/advisories/2021/01/10/proxy.py-2.3.0-broken-basic-authentication/Exploit, Third Party Advisory
- https://cardaci.xyz/advisories/2021/01/10/proxy.py-2.3.0-broken-basic-authentication/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3116?
before_upstream_connection in AuthPlugin in http/proxy/auth.py in proxy.py before 2.3.1 accepts incorrect Proxy-Authorization header data because of a boolean confusion (and versus or).
How severe is CVE-2021-3116?
CVE-2021-3116 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3116?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-3116?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST