CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
9.0 | $0-$5k | 0.00 |
A vulnerability classified as very critical has been found in VMware ESXi (Virtualization Software) (version now known). This affects some unknown processing of the component OpenSLP. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability.
The weakness was shared 02/25/2021 as VMSA-2021-0002. It is possible to read the advisory at zerodayinitiative.com. This vulnerability is uniquely identified as CVE-2021-21974. Access to the local network is required for this attack to succeed. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/09/2023).
Applying a patch is able to eliminate this problem.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.1VulDB Meta Temp Score: 9.0
VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
Vendor Base Score (VMware): 8.8
Vendor Vector (VMware): 🔍
Researcher Base Score: 8.8
Researcher Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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: 🔍
Exploiting
Class: Heap-based overflowCWE: CWE-122 / CWE-119
ATT&CK: Unknown
Local: No
Remote: Partially
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Workaround: kb.vmware.com
Timeline
01/04/2021 🔍02/25/2021 🔍
02/25/2021 🔍
02/09/2023 🔍
Sources
Vendor: vmware.comAdvisory: VMSA-2021-0002
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2021-21974 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20060413
Entry
Created: 02/25/2021 06:45Updated: 02/09/2023 08:34
Changes: 02/25/2021 06:45 (37), 03/05/2021 00:43 (5), 02/09/2023 08:34 (40)
Complete: 🔍
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