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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities
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CVE-2021-32845 Detail

Description

HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, the implementation of `qnotify` at `pci_vtrnd_notify` fails to check the return value of `vq_getchain`. This leads to `struct iovec iov;` being uninitialized and used to read memory in `len = (int) read(sc->vrsc_fd, iov.iov_base, iov.iov_len);` when an attacker is able to make `vq_getchain` fail. This issue may lead to a guest crashing the host causing a denial of service and, under certain circumstance, memory corruption. This issue is fixed in commit 41272a980197917df8e58ff90642d14dec8fe948.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948 Patch 
https://github.com/moby/hyperkit/pull/313 Patch 
https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/ Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-252 Unchecked Return Value cwe source acceptance level NIST  
CWE-908 Use of Uninitialized Resource GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-32845
NVD Published Date:
02/17/2023
NVD Last Modified:
06/26/2023
Source:
GitHub, Inc.