CVE-2020-14364

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.

CVSS v3.1

5.0 MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L

CVSS v2.0

4.4 MEDIUMAV:L/AC:M/Au:N/C:P/I:P/A:P

EPSS

5.45% chance of exploitation in the next 30 days, 92th percentile

Published

2020-08-31

Updated

2024-08-04

Proof-of-concept exploits (3)

• gejian-iscas/CVE-2020-143643★ · 2021-04-20
• xtxtn/vnctf2024-escape_langlang_mountain2wp0★ · 2024-02-18
• y-f00l/CVE-2020-143641★ · 2021-08-13

References

• CVE Record
• NVD entry

Related

• CVE-2020-14356
• CVE-2020-14368
• CVE-2020-14354
• CVE-2020-14372
• CVE-2020-14343
• CVE-2020-14373