Mindrot Jbcrypt up to 0.2 Flow integer overflow

CVSS Meta Temp Score
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5.1$0-$5k0.00

A vulnerability was found in Mindrot Jbcrypt up to 0.2. It has been rated as critical. Affected by this issue is an unknown code of the component Flow. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality. CVE summarizes:

Integer overflow in the crypt_raw method in the key-stretching implementation in jBCrypt before 0.4 makes it easier for remote attackers to determine cleartext values of password hashes via a brute-force attack against hashes associated with the maximum exponent.

The weakness was published 02/27/2015 by gets as Bug 2097 as not defined bug report (Bugzilla). The advisory is available at bugzilla.mindrot.org. This vulnerability is handled as CVE-2015-0886 since 01/08/2015. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 81845 (Fedora 20 : jBCrypt-0.4-1.fc20 (2015-2994)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11990 (Jenkins Multiple Security Vulnerabilities (Security Advisory 2017-02-01)).

Upgrading to version 0.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (81845). Similar entries are available at 63705, 90735, 103642 and 116083.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 81845
Nessus Name: Fedora 20 : jBCrypt-0.4-1.fc20 (2015-2994)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 100755
OpenVAS Name: CloudBees Jenkins Multiple Vulnerability Feb17 - 01 - (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Jbcrypt 0.3

Timelineinfo

01/08/2015 🔍
02/27/2015 +50 days 🔍
02/27/2015 +0 days 🔍
02/27/2015 +0 days 🔍
02/27/2015 +0 days 🔍
03/17/2015 +18 days 🔍
03/30/2015 +13 days 🔍
03/31/2015 +1 days 🔍
05/01/2022 +2588 days 🔍

Sourcesinfo

Advisory: Bug 2097
Researcher: gets
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-0886 (🔍)
Vulnerability Center: 49256 - jBCrypt before 0.4 Remote Password Disclosure due to an Integer Overflow in the Crypt_raw Method, Medium
SecurityFocus: 72962 - jBCrypt CVE-2015-0886 Remote Integer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 03/30/2015 12:26
Updated: 05/01/2022 08:02
Changes: 03/30/2015 12:26 (65), 06/24/2017 09:19 (10), 05/01/2022 08:02 (3)
Complete: 🔍

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