CVE-2020-9934
Apple — Apple iOS, iPadOS, and macOS Input Validation Vulnerability
Apple · Not classified by connected sources · in CISA KEV since 2022-09-08
EVRS 75 of 100 Urgent
Patch This Cycle
Rank 1,185 of 2,954 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 75
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.032.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
ipados: update to 13.6 or later | iphone os: update to 13.6 or later | mac os x: update to 10.15.6 or later
Affected versions
- ipados
< 13.6 - iphone os
< 13.6 - mac os x
< 10.15.6
Remediation
Apply updates per vendor instructions.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 5.5 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.032 (88.1st pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2022-09-29 · KEV since 2022 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 5.5 (v3.1), assigned by apple. | Listed | ENISA EUVD |
Description
NVDAn issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6. A local user may be able to view sensitive user information.
What CISA says to do
Public module
Metasploit lists a public normal-rank module for this CVE: Bypass the macOS TCC Framework (osx/escalate/tccbypass). A module existing is not the same as active exploitation; see metasploit.com.