openssl gem on Ruby GCM cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in openssl gem on Ruby. This vulnerability affects unknown code of the component GCM. Such manipulation leads to cryptographic issue. This vulnerability is listed as CVE-2016-7798. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in openssl gem on Ruby (Network Encryption Software) (affected version not known). It has been rated as critical. Affected by this issue is some unknown functionality of the component GCM. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The bug was discovered 01/30/2017. The weakness was presented 01/30/2017 by Mike (Website). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2016-7798 since 09/09/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability scanner Nessus provides a plugin with the ID 102212 (Fedora 25 : ruby (2017-7faa3d2e78)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196859 (Ubuntu Security Notification for Ruby1.9.1, Ruby2.0, Ruby2.3 Vulnerabilities (USN-3365-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102212) and SecurityFocus (BID 93031†). See VDB-95056, VDB-99047 and VDB-102247 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102212
Nessus Name: Fedora 25 : ruby (2017-7faa3d2e78)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for ruby2.3 USN-3365-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: github.com

Timelineinfo

09/09/2016 🔍
09/19/2016 +10 days 🔍
01/30/2017 +133 days 🔍
01/30/2017 +0 days 🔍
01/30/2017 +0 days 🔍
01/31/2017 +1 days 🔍
08/04/2017 +185 days 🔍
08/07/2017 +3 days 🔍
11/11/2022 +1922 days 🔍

Sourcesinfo

Advisory: FEDORA-2017-7faa3d2e78
Researcher: Mike
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-7798 (🔍)
GCVE (CVE): GCVE-0-2016-7798
GCVE (VulDB): GCVE-100-96308

OVAL: 🔍

SecurityFocus: 93031 - Ruby OpenSSL Security Bypass Vulnerability
OSVDB: - CVE-2016-7798 - Ruby - Security Bypass Issue

See also: 🔍

Entryinfo

Created: 01/31/2017 09:53
Updated: 11/11/2022 09:46
Changes: 01/31/2017 09:53 (73), 08/07/2020 16:44 (9), 11/11/2022 09:41 (4), 11/11/2022 09:46 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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