CVE-2015-1793 Security feature bypass in n/a
Remote attackers can spoof Certification Authority roles and trigger unintended certificate verifications by exploiting improper Basic Constraints processing in OpenSSL.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-1793?
CVE-2015-1793 is a medium-severity vulnerability in Openssl Openssl, published on 9 Jul 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.
Weakness: CWE-254
Which versions are affected by CVE-2015-1793?
It affects 4 products.
Products include Openssl Openssl, Oracle Jd Edwards Enterpriseone Tools, Oracle Opus 10g Ethernet Switch Family, Oracle Supply Chain Products Suite.
How do I fix CVE-2015-1793?
Upgrade to a fixed version.
Is CVE-2015-1793 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2015-1793 exists.
Public exploit code: 1 Metasploit module and 1 Exploit-DB entry.
Other vulnerabilities in Openssl Openssl
Sources
Also known as DEBIAN-CVE-2015-1793, GHSA-4j29-v246-6w5w, MGASA-2015-0274.