CVE-2016-0799 Integer overflow in n/a
Remote attackers can cause denial of service via integer overflow in OpenSSL's string formatting function when processing long strings or ASN.1 data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-0799?
CVE-2016-0799 is a critical vulnerability in Openssl Openssl, published on 3 Mar 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The fmtstr function in crypto/bio/b_print.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g improperly calculates string lengths, which allows remote attackers to cause a denial of service (overflow and out-of-bounds read) or possibly have unspecified other impact via a long string, as demonstrated by a large amount of ASN.1 data, a different vulnerability than CVE-2016-2842.
Weakness: CWE-119
Which versions are affected by CVE-2016-0799?
It affects 3 products.
Products include Openssl Openssl, Pulsesecure Client, Pulsesecure Steel Belted Radius.
How do I fix CVE-2016-0799?
Upgrade to a fixed version.
Is CVE-2016-0799 being exploited?
There is no known exploitation of CVE-2016-0799 in the wild and no public exploit code.
Other vulnerabilities in Openssl Openssl
Sources
Also known as DEBIAN-CVE-2016-0799, GHSA-x493-jjcm-ffg2, UBUNTU-CVE-2016-0799.