SB2020070168 - Improper Certificate Validation in firefox (Alpine package)

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Certificate Validation (CVE-ID: CVE-2020-12421)

CWE-ID: CWE-295 - Improper Certificate Validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to disable installed Add-Ons.

The vulnerability exists due to Add-On updates do not respect the same certificate trust rules as software updates. When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user.

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=50b9c9305ecf9f2f8a410c6ea4061b862e0d90d3
• https://git.alpinelinux.org/aports/commit/?id=e4a686c2dde77849f3b4deb5bddc8f12226d6c28
• https://git.alpinelinux.org/aports/commit/?id=ec5f4ee787ff7c93554db1adad3f948797da3871
• https://git.alpinelinux.org/aports/commit/?id=9fdb676f9b442b62e9679953f32613ee3c3f82e1
• https://git.alpinelinux.org/aports/commit/?id=692a20732e84f5c97fd8312b369d43fc43c7bfc5
• https://git.alpinelinux.org/aports/commit/?id=9479fd03dc65a7561e26946980c924c4147e42d2
• https://git.alpinelinux.org/aports/commit/?id=02f4c40162bc3c2f611ce86613bbf01f13e6146b
• https://git.alpinelinux.org/aports/commit/?id=7ece421265010e81e06c3b8b9137b0b62f7acc73