CVE-2015-1787 Denial of service in n/a
Remote attackers can crash the OpenSSL daemon via a zero-length ClientKeyExchange message when client authentication and ephemeral DH are enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2015-1787?
CVE-2015-1787 is a low-severity denial of service vulnerability in Openssl Openssl, published on 19 Mar 2015. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The ssl3_get_client_key_exchange function in s3_srvr.c in OpenSSL 1.0.2 before 1.0.2a, when client authentication and an ephemeral Diffie-Hellman ciphersuite are enabled, allows remote attackers to cause a denial of service (daemon crash) via a ClientKeyExchange message with a length of zero.
Weakness: CWE-20
Which versions are affected by CVE-2015-1787?
It affects 1 product.
Products include Openssl Openssl.
How do I fix CVE-2015-1787?
No fix has been published for CVE-2015-1787 yet. Limit exposure of the affected software until one is available.
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-2015-1787 being exploited?
There is no known exploitation of CVE-2015-1787 in the wild and no public exploit code.
Other vulnerabilities in Openssl Openssl
Sources
Also known as GHSA-q9c2-pp3c-3qv9.