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.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
http://www.openwall.com/lists/oss-security/2016/09/19/9	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/30/6	Mailing List Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/01/2	Mailing List Third Party Advisory
http://www.securityfocus.com/bid/93031	Third Party Advisory VDB Entry
https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062	Patch Third Party Advisory
https://github.com/ruby/openssl/issues/49	Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html	Mailing List Third Party Advisory
https://www.debian.org/security/2017/dsa-3966	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/19/9	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/30/6	Mailing List Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/01/2	Mailing List Third Party Advisory
http://www.securityfocus.com/bid/93031	Third Party Advisory VDB Entry
https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062	Patch Third Party Advisory
https://github.com/ruby/openssl/issues/49	Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html	Mailing List Third Party Advisory
https://www.debian.org/security/2017/dsa-3966	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ruby-lang:openssl:*:*:*:*:*:ruby:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*

History

21 Nov 2024, 02:58

Type	Values Removed	Values Added
References	~~() http://www.openwall.com/lists/oss-security/2016/09/19/9 - Mailing List, Third Party Advisory~~	() http://www.openwall.com/lists/oss-security/2016/09/19/9 - Mailing List, Third Party Advisory
References	~~() http://www.openwall.com/lists/oss-security/2016/09/30/6 - Mailing List, Patch, Third Party Advisory~~	() http://www.openwall.com/lists/oss-security/2016/09/30/6 - Mailing List, Patch, Third Party Advisory
References	~~() http://www.openwall.com/lists/oss-security/2016/10/01/2 - Mailing List, Third Party Advisory~~	() http://www.openwall.com/lists/oss-security/2016/10/01/2 - Mailing List, Third Party Advisory
References	~~() http://www.securityfocus.com/bid/93031 - Third Party Advisory, VDB Entry~~	() http://www.securityfocus.com/bid/93031 - Third Party Advisory, VDB Entry
References	~~() https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062 - Patch, Third Party Advisory~~	() https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062 - Patch, Third Party Advisory
References	~~() https://github.com/ruby/openssl/issues/49 - Exploit, Third Party Advisory~~	() https://github.com/ruby/openssl/issues/49 - Exploit, Third Party Advisory
References	~~() https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html - Mailing List, Third Party Advisory~~	() https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html - Mailing List, Third Party Advisory
References	~~() https://www.debian.org/security/2017/dsa-3966 - Third Party Advisory~~	() https://www.debian.org/security/2017/dsa-3966 - Third Party Advisory

Information

Published : 2017-01-30 22:59

Updated : 2025-04-20 01:37

NVD link : CVE-2016-7798

Mitre link : CVE-2016-7798

CVE.ORG link : CVE-2016-7798

JSON object : View

Products Affected

ruby-lang

openssl

debian

debian_linux

CWE

CWE-326

Inadequate Encryption Strength

{"id": "CVE-2016-7798", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": true, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2017-01-30T22:59:00.747", "references": [{"url": "http://www.openwall.com/lists/oss-security/2016/09/19/9", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2016/09/30/6", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2016/10/01/2", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/93031", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/ruby/openssl/issues/49", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.debian.org/security/2017/dsa-3966", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2016/09/19/9", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2016/09/30/6", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2016/10/01/2", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securityfocus.com/bid/93031", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/ruby/openssl/issues/49", "tags": ["Exploit", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.debian.org/security/2017/dsa-3966", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-326"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "La openssl gem para Ruby utiliza el mismo vector de inicializaci\u00f3n (IV) en el modo GCM (aes - * - gcm) cuando el IV se establece en versiones anteriores a la clave, lo que facilita que los atacantes dependiendo del contexto eludan el mecanismo de protecci\u00f3n del cifrado."}], "lastModified": "2025-04-20T01:37:25.860", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ruby-lang:openssl:*:*:*:*:*:ruby:*:*", "vulnerable": true, "matchCriteriaId": "5A99A902-22BC-4E8A-92CD-58A7ABA19A5E", "versionEndExcluding": "2.0.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}, {"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}

7.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

JSON object

Attach tags to CVE-2016-7798

7.5^/10

5.0^/10

Attach tags to `CVE-2016-7798`