CVE-2016-7798

Public Exploit

Description

The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.21%
Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2016/09/30/6 patch mailing list third party advisory
https://www.debian.org/security/2017/dsa-3966 third party advisory vendor advisory
https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062 third party advisory patch
http://www.openwall.com/lists/oss-security/2016/10/01/2 third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/09/19/9 third party advisory mailing list
http://www.securityfocus.com/bid/93031 third party advisory vdb entry
https://github.com/ruby/openssl/issues/49 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2016-7798?
CVE-2016-7798 has been scored as a high severity vulnerability.
How to fix CVE-2016-7798?
To fix CVE-2016-7798, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-7798 being actively exploited in the wild?
It is possible that CVE-2016-7798 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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