CVE-2017-2773 Auth bypass in PCF Elastic Runtime
Attackers can impersonate users due to incomplete JWT validation, leading to unauthorized access in PCF Elastic Runtime.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-2773?
CVE-2017-2773 is a critical authentication bypass vulnerability in PCF Elastic Runtime, published on 13 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Pivotal PCF Elastic Runtime 1.6.x versions prior to 1.6.60, 1.7.x versions prior to 1.7.41, 1.8.x versions prior to 1.8.23, and 1.9.x versions prior to 1.9.1. Incomplete validation logic in JSON Web Token (JWT) libraries can allow unprivileged attackers to impersonate other users in multiple components included in PCF Elastic Runtime, aka an "Unauthenticated JWT signing algorithm in multiple components" issue.
Weakness: CWE-20
Which versions are affected by CVE-2017-2773?
It affects 1 product.
Products include Pivotal Software Cloud Foundry Elastic Runtime.
How do I fix CVE-2017-2773?
No fix has been published for CVE-2017-2773 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2017-2773 being exploited?
There is no known exploitation of CVE-2017-2773 in the wild and no public exploit code.
Other vulnerabilities in PCF Elastic Runtime
- CVE-2017-4955 Information disclosure in PCF Elastic Runtime
- CVE-2017-4959 Auth bypass in PCF Elastic Runtime
- CVE-2016-6657 Open redirect in PCF Elastic Runtime 1.8.x versions prior to 1.8.12 and PCF Ops Manager 1.7.x versions prior to 1.7.18 and 1.8.x versions prior to 1.8.10
- CVE-2016-0896 Security feature bypass in n/a
- CVE-2016-0926 Cross-site scripting in n/a
Sources
Also known as GHSA-q8g2-5223-5rmm.