SB2020010957 - Type Confusion in firefox (Alpine package)

Description

This security bulletin contains information about 1 security vulnerability.

1) Type Confusion (CVE-ID: CVE-2019-17026)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error with StoreElementHole and FallibleStoreElement when processing HTML content in IonMonkey JIT compiler. A remote attacker can create a specially crafted webpage, 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.

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=af0d1d1edd77beb85efb9bbf0ad15000eb319170
• https://git.alpinelinux.org/aports/commit/?id=6b5e4482828c460437f6c79a23c688d6d99a14fd
• https://git.alpinelinux.org/aports/commit/?id=ed2c5b48f57ac3a3a379f6a0db7ef891fcdbaeeb