CVE-2013-7463 : The aescrypt gem 1.0.0 for Ruby does not randomize the CBC IV for use with the AESCrypt.encrypt and AESCrypt.decrypt fun

The aescrypt gem 1.0.0 for Ruby does not randomize the CBC IV for use with the AESCrypt.encrypt and AESCrypt.decrypt functions, which allows attackers to defeat cryptographic protection mechanisms via a chosen plaintext attack.

Published 2017-04-19 17:59:00

Updated 2017-04-28 13:15:48

Source MITRE

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2013-7463

EPSS FAQ

0.18%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 54 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2013-7463

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

References for CVE-2013-7463

http://www.securityfocus.com/bid/98035

aescrypt gem CVE-2013-7463 Multiple Security Bypass Vulnerabilities
https://github.com/Gurpartap/aescrypt/issues/4

Please use IV for CBC mode · Issue #4 · Gurpartap/aescrypt · GitHub
Third Party Advisory

Products affected by CVE-2013-7463

Aescrypt Project » Aescrypt » For Ruby
Versions up to, including, (<=) 1.0.0
cpe:2.3:a:aescrypt_project:aescrypt:*:*:*:*:*:ruby:*:*
Matching versions

Vulnerability Details : CVE-2013-7463

Exploit prediction scoring system (EPSS) score for CVE-2013-7463

CVSS scores for CVE-2013-7463

CWE ids for CVE-2013-7463

References for CVE-2013-7463

Products affected by CVE-2013-7463