Resource management error in firefox-esr (Alpine package)

1) Resource management error

EUVDB-ID: #VU49018

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-26976

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improper management of internal resources within the application, when processing embedded elements with https/http protocols. When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former, the service worker could have intercepted the request for the secure page despite the iframe not being a secure context due to the (insecure) framing.

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox-esr (Alpine package): 60.4.0-r0 - 78.6.1-r0

CPE2.3

• cpe:2.3:o:alpine:firefox-esr_alpine_package:78.6.1-r0:*:*:*:*:alpine_linux:*:
• 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:*:

External links

http://git.alpinelinux.org/aports/commit/?id=3bfe2035546b511130bb1e0f6aee1a9de86814d9

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.