Risk | Critical |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2019-11707 |
CWE-ID | CWE-843 |
Exploitation vector | Network |
Public exploit | This vulnerability is being exploited in the wild. |
Vulnerable software Subscribe |
Firefox ESR Client/Desktop applications / Web browsers Mozilla Firefox Client/Desktop applications / Web browsers |
Vendor | Mozilla |
This security bulletin contains information about 1 vulnerabilities.
UPDATED 20.06.2019
Added information about additional vulnerability, exploited in the attack.
EUVDB-ID: #VU18824
Risk: Critical
CVSSv3.1:
CVE-ID: CVE-2019-11707
CWE-ID:
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error when manipulating JavaScript objects due to issues in Array.pop
. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: this vulnerability is being actively exploited in the wild along with SB2019062002 (CVE-2019-11708).
Install updates from vendor's website.
Vulnerable software versionsFirefox ESR: 60.0 - 60.7.0
Mozilla Firefox: 61.0 - 67.0.2
http://www.mozilla.org/en-US/security/advisories/mfsa2019-18/
http://twitter.com/5aelo/status/1141273394723414016
http://twitter.com/SecurityGuyPhil/status/1141466335592869888
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?