VDB-218762 · CVE-2023-21830 · Nessus 239884

Oracle Java SE 8u351/8u351-perf Serialization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$5k-$25k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Oracle Java SE 8u351/8u351-perf. Impacted is an unknown function of the component Serialization. Such manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2023-21830. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Oracle Java SE 8u351/8u351-perf (Programming Language Software). It has been rated as critical. Affected by this issue is an unknown code block of the component Serialization. Impacted is integrity.

The weakness was disclosed 01/17/2023 as Oracle Critical Patch Update Advisory - January 2023. The advisory is available at oracle.com. This vulnerability is handled as CVE-2023-21830. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 06/18/2025). It is expected to see the exploit prices for this product decreasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 239884 (TencentOS Server 3: java-8-konajdk (TSSA-2023:0031)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (239884). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Programming Language Software

Vendor

Oracle

Name

Java SE

Version

License

open-source

Website

Vendor: https://www.oracle.com

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

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

CNA Base Score: 5.3
CNA Vector (Oracle): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Unknown
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 239884
Nessus Name: TencentOS Server 3: java-8-konajdk (TSSA-2023:0031)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

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

Timelineinfo

12/17/2022 🔍
01/17/2023 +31 days 🔍
01/17/2023 +0 days 🔍
01/18/2023 +1 days 🔍
06/18/2025 +882 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: Oracle Critical Patch Update Advisory - January 2023
Status: Confirmed

CVE: CVE-2023-21830 (🔍)
GCVE (CVE): GCVE-0-2023-21830
GCVE (VulDB): GCVE-100-218762

Entryinfo

Created: 01/18/2023 07:28
Updated: 06/18/2025 23:35
Changes: 01/18/2023 07:28 (39), 02/13/2023 20:11 (2), 02/13/2023 20:19 (11), 02/13/2023 20:26 (1), 06/18/2025 23:35 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.