CVE-2016-0703
Last modified
CVE-2016-0703 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 5.40% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | <= 0.9.8ze |
| Openssl | Openssl | 1.0.0 |
| Openssl | Openssl | 1.0.0a |
| Openssl | Openssl | 1.0.0b |
| Openssl | Openssl | 1.0.0c |
| Openssl | Openssl | 1.0.0d |
| Openssl | Openssl | 1.0.0e |
| Openssl | Openssl | 1.0.0f |
| Openssl | Openssl | 1.0.0g |
| Openssl | Openssl | 1.0.0h |
| Openssl | Openssl | 1.0.0i |
| Openssl | Openssl | 1.0.0j |
| Openssl | Openssl | 1.0.0k |
| Openssl | Openssl | 1.0.0l |
| Openssl | Openssl | 1.0.0m |
| Openssl | Openssl | 1.0.0n |
| Openssl | Openssl | 1.0.0o |
| Openssl | Openssl | 1.0.0p |
| Openssl | Openssl | 1.0.0q |
| Openssl | Openssl | 1.0.1 |
| Openssl | Openssl | 1.0.1a |
| Openssl | Openssl | 1.0.1b |
| Openssl | Openssl | 1.0.1c |
| Openssl | Openssl | 1.0.1d |
| Openssl | Openssl | 1.0.1e |
| Openssl | Openssl | 1.0.1f |
| Openssl | Openssl | 1.0.1g |
| Openssl | Openssl | 1.0.1h |
| Openssl | Openssl | 1.0.1i |
| Openssl | Openssl | 1.0.1j |
| Openssl | Openssl | 1.0.1k |
| Openssl | Openssl | 1.0.1l |
| Openssl | Openssl | 1.0.2 |
References
- http://openssl.org/news/secadv/20160301.txtVendor Advisory
- http://openssl.org/news/secadv/20160301.txtVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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