Use-after-free in firefox (Alpine package)

1) Use-after-free

EUVDB-ID: #VU47360

Risk: High

CVSSv4.0: 6.1 [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:U/U:Amber]

CVE-ID: CVE-2020-15969

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the usersctp library. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox (Alpine package): 60.0.1-r0 - 79.0-r1

CPE2.3

• cpe:2.3:o:alpine:firefox_alpine_package:60.0.1-r0:*:*:*:*:alpine_linux:*:3.8
• cpe:2.3:o:alpine:firefox_alpine_package:68.0.2-r0:*:*:*:*:alpine_linux:*:3.10
• cpe:2.3:o:alpine:firefox_alpine_package:69.0.3-r0:*:*:*:*:alpine_linux:*:3.10

External links

https://git.alpinelinux.org/aports/commit/?id=13a8f0d1284680f721e935cc6d3cb2649cf25093

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.