Apereo CAS up to 6.1.0-RC4 Token Generator PRNG weak prng

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

A vulnerability was found in Apereo CAS up to 6.1.0-RC4. It has been rated as critical. This issue affects an unknown part of the component Token Generator. The manipulation with an unknown input leads to a weak prng vulnerability (PRNG). Using CWE to declare the problem leads to CWE-338. The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong. Impacted is confidentiality, and integrity. The summary by CVE is:

Multiple classes used within Apereo CAS before release 6.1.0-RC5 makes use of apache commons-lang3 RandomStringUtils for token and ID generation which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong.

The weakness was published 09/23/2019. The identification of this vulnerability is CVE-2019-10754 since 04/03/2019. The exploitation is known to be easy. The attack may be initiated remotely. A simple authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

Upgrading to version 6.1.0-RC5 eliminates this vulnerability.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: PRNG
Class: Weak prng / PRNG
CWE: CWE-338 / CWE-331 / CWE-330
CAPEC: 🔍
ATT&CK: 🔍

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CAS 6.1.0-RC5

Timelineinfo

04/03/2019 🔍
09/23/2019 +173 days 🔍
09/24/2019 +1 days 🔍
12/27/2023 +1555 days 🔍

Sourcesinfo

Advisory: snyk.io
Status: Not defined

CVE: CVE-2019-10754 (🔍)

Entryinfo

Created: 09/24/2019 20:20
Updated: 12/27/2023 13:30
Changes: 09/24/2019 20:20 (39), 09/06/2020 09:20 (17), 12/27/2023 13:30 (4)
Complete: 🔍

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