Oracle Communications Session Router Cz8.2/Cz8.3/Cz8.4 Routing denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Oracle Communications Session Router Cz8.2/Cz8.3/Cz8.4. It has been classified as critical. Affected is an unknown function of the component Routing. The manipulation leads to denial of service. This vulnerability is documented as CVE-2020-1971. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Oracle Communications Session Router Cz8.2/Cz8.3/Cz8.4 (Cloud Software) and classified as critical. This issue affects an unknown code block of the component Routing. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was released 04/21/2021 as Oracle Critical Patch Update Advisory - April 2021. The advisory is shared at oracle.com. The identification of this vulnerability is CVE-2020-1971. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 211827 (Oracle Linux 9 : edk2 (ELSA-2024-12842)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211827). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

ADP CISA Base Score: 5.9
ADP CISA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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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Nessus ID: 211827
Nessus Name: Oracle Linux 9 : edk2 (ELSA-2024-12842)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/03/2019 🔍
04/21/2021 +504 days 🔍
04/21/2021 +0 days 🔍
04/23/2021 +2 days 🔍
05/30/2026 +1863 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: Oracle Critical Patch Update Advisory - April 2021
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-1971 (🔍)
GCVE (CVE): GCVE-0-2020-1971
GCVE (VulDB): GCVE-100-173381

Entryinfo

Created: 04/23/2021 06:39
Updated: 05/30/2026 16:58
Changes: 04/23/2021 06:39 (40), 04/24/2021 14:58 (6), 04/24/2021 15:00 (18), 06/22/2024 04:11 (17), 11/26/2024 11:12 (2), 05/03/2025 23:55 (3), 05/30/2026 16:58 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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