Vulnerability Details : CVE-2021-31427
This vulnerability allows local attackers to disclose sensitive information on affected installations of Parallels Desktop 15.1.5-47309. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Open Tools Gate component. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13082.
Vulnerability category: Execute code
Products affected by CVE-2021-31427
- cpe:2.3:a:parallels:parallels_desktop:15.1.5-47309:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31427
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31427
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
1.9
|
LOW | AV:L/AC:M/Au:N/C:P/I:N/A:N |
3.4
|
2.9
|
NIST | |
|
7.3
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L |
2.0
|
4.7
|
Zero Day Initiative | |
|
5.6
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |
1.1
|
4.0
|
NIST |
CWE ids for CVE-2021-31427
-
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.Assigned by:
- nvd@nist.gov (Primary)
- zdi-disclosures@trendmicro.com (Secondary)
-
The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31427
-
https://kb.parallels.com/en/125013
Parallels Desktop Security UpdatesVendor Advisory
-
https://www.zerodayinitiative.com/advisories/ZDI-21-435/
ZDI-21-435 | Zero Day InitiativeThird Party Advisory;VDB Entry
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