Oracle ZFS Storage Appliance Kit 8.8 Operating System Image buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$5k-$25k0.00

Summaryinfo

A vulnerability categorized as very critical has been discovered in Oracle ZFS Storage Appliance Kit 8.8. Impacted is an unknown function of the component Operating System Image. The manipulation results in an unknown weakness. This vulnerability is known as CVE-2021-3177. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Oracle ZFS Storage Appliance Kit 8.8. It has been classified as very critical. Affected is an unknown functionality of the component Operating System Image. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 07/20/2021 as Oracle Critical Patch Update Advisory - July 2021. The advisory is available at oracle.com. This vulnerability is traded as CVE-2021-3177. 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 12/18/2025).

As 0-day the estimated underground price was around $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 236633 (Alibaba Cloud Linux 3 : 0112: python27:2.7 (ALINUX3-SA-2022:0112)), 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 (236633). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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

Class: Buffer overflow
CWE: CWE-120 / CWE-119
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: 236633
Nessus Name: Alibaba Cloud Linux 3 : 0112: python27:2.7 (ALINUX3-SA-2022:0112)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

01/19/2021 🔍
07/20/2021 +181 days 🔍
07/20/2021 +0 days 🔍
07/21/2021 +1 days 🔍
12/18/2025 +1611 days 🔍

Sourcesinfo

Vendor: oracle.com

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

CVE: CVE-2021-3177 (🔍)
GCVE (CVE): GCVE-0-2021-3177
GCVE (VulDB): GCVE-100-179250

Entryinfo

Created: 07/21/2021 10:38
Updated: 12/18/2025 16:32
Changes: 07/21/2021 10:38 (38), 07/25/2021 17:27 (3), 07/25/2021 17:34 (17), 05/19/2025 19:40 (17), 12/18/2025 16:32 (1)
Complete: 🔍
Cache ID: 216::103

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

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