CVE-2016-0703 Information disclosure in n/a

What is CVE-2016-0703?

CVE-2016-0703 is a medium-severity vulnerability in Openssl Openssl, published on 2 Mar 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.

Weakness: CWE-200

Which versions are affected by CVE-2016-0703?

It affects 1 product.

Products include Openssl Openssl.

How do I fix CVE-2016-0703?

Upgrade to a fixed version.

Is CVE-2016-0703 being exploited?

There is no known exploitation of CVE-2016-0703 in the wild and no public exploit code.

Other vulnerabilities in Openssl Openssl

• CVE-2009-3245 Null dereference in n/a Critical 10.0
• CVE-2006-3738 Memory corruption in n/a Critical 10.0
• CVE-2026-63073 Untrusted Sender DN Used as Format String in CMP Response Validation Critical 9.8
• CVE-2016-6309 Use after free in n/a Critical 9.8
• CVE-2016-0799 Integer overflow in n/a Critical 9.8

All Openssl Openssl vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-0703, GHSA-jqfv-c9gp-wf8f.