Public exploit available
Public proof-of-concept or exploit code exists (ExploitDB / Metasploit / Nuclei).
CVE-2019-9813 — Type Confusion in Mozilla Firefox
Severity
8.8HIGHNVD
OSV5.9
EPSS
46.7%
top 2.33%
CISA KEV
Not in KEV
Exploit
PoC available
Public exploit / PoC exists
Affected products
Timeline
PublishedApr 26
Latest updateMay 24
Description
Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9
Affected Packages8 packages
🔴Vulnerability Details
3GHSA▶
GHSA-qxrm-24v6-5c8c: Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write↗2022-05-24
OSV▶
CVE-2019-9813: Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write↗2019-04-26
💥Exploits & PoCs
1Exploit-DB▶
SpiderMonkey - IonMonkey Compiled Code Fails to Update Inferred Property Types (Type Confusion)↗2019-04-03