CVE-2015-1792 Denial of service in n/a
Remote attackers can cause a denial of service via an infinite loop in OpenSSL's CMS handling when processing unrecognized hash OIDs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-1792?
CVE-2015-1792 is a medium-severity denial of service vulnerability in Openssl Openssl, published on 12 Jun 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The do_free_upto function in crypto/cms/cms_smime.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (infinite loop) via vectors that trigger a NULL value of a BIO data structure, as demonstrated by an unrecognized X.660 OID for a hash function.
Weakness: CWE-399
Which versions are affected by CVE-2015-1792?
It affects 1 product.
Products include Openssl Openssl.
How do I fix CVE-2015-1792?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2015-1792 being exploited?
There is no known exploitation of CVE-2015-1792 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Openssl Openssl
Sources
Also known as DEBIAN-CVE-2015-1792, GHSA-q68f-qqmm-qvj9, UBUNTU-CVE-2015-1792.