Resource management error in firefox-esr (Alpine package)

1) Resource management error

EUVDB-ID: #VU46016

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15664

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to the way Firefox handles prompts. By holding a reference to the eval() function from an about:blank window, a malicious webpage could have gained access to the InstallTrigger object which would allow them to prompt the user to install an extension. Combined with user confusion, this could result in an unintended or malicious extension being installed.

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox-esr (Alpine package): 60.4.0-r0 - 78.1.0-r1

CPE2.3

• cpe:2.3:o:alpine:firefox-esr_alpine_package:78.1.0-r1:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:firefox-esr_alpine_package:78.0.2-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:firefox-esr_alpine_package:68.6.0-r1:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=ddfe4a2c072f3650ea79b45cffb9f6ac8a154cfb
http://git.alpinelinux.org/aports/commit/?id=ec7853eade2b7d671bc10bb748c69725d946a4fa

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.