SB2019032306 - Memory corruption in firefox-esr (Alpine package)

Description

This security bulletin contains information about 1 vulnerability.

1) Memory corruption (CVE-ID: CVE-2019-9792)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error within the IonMonkey just-in-time (JIT) compiler that leaks an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. A remote attacker can trick the victim to visit a specially crafted web page, trigger memory corruption and execute arbitrary code on the system with privileges of the current user.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=5f4478599688e562154c7fc319b29c46f79083bf
• https://git.alpinelinux.org/aports/commit/?id=985780d336a595bbba269e8d1c32715d70dbee68