High severity · published Jan 30, 2017
CVE-2016-7798
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…
7.5
CVSS
3.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
OP
Openssl · Ruby-lang
before 2.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-7798
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-7798
Mailing List
http://www.openwall.com/lists/oss-security/2016/09/19/9
Mailing List
http://www.openwall.com/lists/oss-security/2016/09/30/6
Mailing List
http://www.openwall.com/lists/oss-security/2016/10/01/2
Third Party Advisory
http://www.securityfocus.com/bid/93031
Patch
https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062
Exploit
https://github.com/ruby/openssl/issues/49
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