VulnerabilityModified
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 to bypass the encryption protection mechanism.
HIGH 7.5EPSS 3.17%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a 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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 3.17% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-326
- Affected
- ruby-lang/openssl · debian/debian linux
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2016/09/19/9Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/09/30/6Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/10/01/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/93031Third Party Advisory, VDB Entry
- https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062Patch, Third Party Advisory
- https://github.com/ruby/openssl/issues/49Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3966Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/09/19/9Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/09/30/6Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/10/01/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/93031Third Party Advisory, VDB Entry
- https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062Patch, Third Party Advisory
- https://github.com/ruby/openssl/issues/49Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3966Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.