PT-2023-1857 · Hyperkit · Hyperkit

Agustin Gianni · Publicado 2023-02-20 · Atualizado 2023-03-01 · CVE-2021-32847

Positive Technologies (AI Summary)

CVSS v3.1

7.1

Alta

Vetor base

AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions HyperKit versions 0.20210107 and prior

Description The issue is related to a buffer overflow in memory, which can be exploited by a malicious guest to gain unauthorized access to protected information. This is achieved by abusing the disk driver, potentially leading to the disclosure of the host memory into the virtualized guest.

Recommendations For HyperKit versions 0.20210107 and prior, update to a version that includes the fix committed in cf60095a4d8c3cb2e182a14415467afd356e982f to resolve the issue. As a temporary workaround, consider restricting access to the disk driver to minimize the risk of exploitation.

Exploit

Correção

Out of bounds Read

Enumeração de Fraquezas

CWE-125

Identificadores relacionados

BDU:2023-01456

CVE-2021-32847

Produtos afetados

Hyperkit

Referências · 7

• 🔥 https://github.com/moby/hyperkit/blob/2f061e447e1435cdf1b9eda364cea6414f2c606b/src/lib/pci_virtio_block.c#L316 · Exploit
• 🔥 https://securitylab.github.com/advisories/GHSL-2021-058-moby-hyperkit · Exploit
• https://github.com/moby/hyperkit/commit/cf60095a4d8c3cb2e182a14415467afd356e982f · Correção
• https://bdu.fstec.ru/vul/2023-01456 · Nota de Segurança
• https://t.me/cibsecurity/58536 · Publicação no Telegram
• https://nvd.nist.gov/vuln/detail/CVE-2021-32847 · Nota de Segurança
• https://osv.dev/vulnerability/CVE-2021-32847 · Aviso do Fabricante