SB2019032307 - Memory corruption in firefox-esr (Alpine package)

Description

This security bulletin contains information about 1 security vulnerability.

1) Memory corruption (CVE-ID: CVE-2019-9793)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to missing boundary checks for strings, arrays or typed arrays when the default Spectre mitigations have been disabled. 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 but requires the user to specifically disable Spectre mitigations.

Remediation

Install update from vendor's website.

References

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