Ratpack up to 1.6.0 Session 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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4.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Ratpack up to 1.6.0. Affected is an unknown function of the component Session Generator. The manipulation leads to weak prng (PRNG). This vulnerability is documented as CVE-2019-11808. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Ratpack up to 1.6.0. It has been rated as critical. This issue affects some unknown processing of the component Session 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, integrity, and availability. The summary by CVE is:

Ratpack versions before 1.6.1 generate a session ID using a cryptographically weak PRNG in the JDK's ThreadLocalRandom. This means that if an attacker can determine a small window for the server start time and obtain a session ID value, they can theoretically determine the sequence of session IDs.

The bug was discovered 04/22/2019. The weakness was released 05/07/2019. The identification of this vulnerability is CVE-2019-11808 since 05/07/2019. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.6.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.7
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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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: 🔍

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Ratpack 1.6.1
Patch: github.com

Timelineinfo

04/22/2019 🔍
05/07/2019 +15 days 🔍
05/07/2019 +0 days 🔍
05/07/2019 +0 days 🔍
09/12/2023 +1589 days 🔍

Sourcesinfo

Product: github.com

Advisory: f2b63eb82dd71194319fd3945f5edf29b8f3a42d
Status: Not defined

CVE: CVE-2019-11808 (🔍)
GCVE (CVE): GCVE-0-2019-11808
GCVE (VulDB): GCVE-100-134441

Entryinfo

Created: 05/07/2019 15:05
Updated: 09/12/2023 18:27
Changes: 05/07/2019 15:05 (56), 06/07/2020 12:55 (1), 09/12/2023 18:27 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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