Buffer overflow in Parallels Desktop
CVE-2021-31429
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.5-47309. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the IDE virtual device. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13187.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (36.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Parallels Desktop — versions 15.1.5-47309
- Parallels Parallels_desktop — versions 15.1.5-47309
Weakness classification (CWE)
References
- zdi-disclosures@trendmicro.com (x_refsource_MISC, Vendor Advisory)
- zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-31429?
- CVE-2021-31429 is a high-severity vulnerability in Parallels Desktop, classified under Heap-based Buffer Overflow. CVSS score: 8.2/10. Published 2021-04-29.
- How severe is CVE-2021-31429?
- High severity. CVSS v3 base score is 8.2 out of 10.