Integer overflow in Parallels Desktop
CVE-2020-17396
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.4. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the prl_hypervisor module. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11217.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Parallels Desktop — versions 15.1.4
- Parallels Desktop
Weakness classification (CWE)
References
- kb.parallels.com/en/125013 (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-1014/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-17396?
- CVE-2020-17396 is a high-severity vulnerability in Parallels Desktop, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2020-08-25.
- How severe is CVE-2020-17396?
- High severity. CVSS v3 base score is 8.8 out of 10.