Information Exposure Affecting openssl package, versions <1.0.0c-2


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.8% (83rd percentile)

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  • Snyk IDSNYK-DEBIAN9-OPENSSL-374918
  • published2 Mar 2016
  • disclosed2 Mar 2016

Introduced: 2 Mar 2016

CVE-2016-0703  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Debian:9 openssl to version 1.0.0c-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.

References

CVSS Scores

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