VDB-100263 · CVE-2013-7463 · BID 98035

aescrypt gem 1.0.0 on Ruby CBC IV AESCrypt.encrypt/AESCrypt.decrypt random values

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in aescrypt gem 1.0.0 on Ruby. This impacts the function AESCrypt.encrypt/AESCrypt.decrypt of the component CBC IV. Performing a manipulation results in random values. This vulnerability was named CVE-2013-7463. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in aescrypt gem 1.0.0 on Ruby (Ruby Gem). This affects the function AESCrypt.encrypt/AESCrypt.decrypt of the component CBC IV. The manipulation with an unknown input leads to a random values vulnerability. CWE is classifying the issue as CWE-330. The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The bug was discovered 10/01/2013. The weakness was presented 04/20/2017 (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2013-7463 since 04/19/2017. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1600.001 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 1296 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 98035†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Random values
CWE: CWE-330 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/01/2013 🔍
04/19/2017 +1296 days 🔍
04/19/2017 +0 days 🔍
04/19/2017 +0 days 🔍
04/20/2017 +1 days 🔍
04/20/2017 +0 days 🔍
12/20/2020 +1340 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: jfinkhaeuser
Status: Not defined

CVE: CVE-2013-7463 (🔍)
GCVE (CVE): GCVE-0-2013-7463
GCVE (VulDB): GCVE-100-100263
SecurityFocus: 98035 - aescrypt gem CVE-2013-7463 Multiple Security Bypass Vulnerabilities
OSVDB: - CVE-2013-7463 - aescrypt - Insecure Randomization Issue

Entryinfo

Created: 04/20/2017 09:43
Updated: 12/20/2020 22:17
Changes: 04/20/2017 09:43 (61), 09/17/2020 18:52 (4), 12/20/2020 22:17 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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