CVE-2013-6673

Publication date 11 December 2013

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 do not recognize a user's removal of trust from an EV X.509 certificate, which makes it easier for man-in-the-middle attackers to spoof SSL servers in opportunistic circumstances via a valid certificate that is unacceptable to the user.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	13.10 saucy	Fixed 26.0+build2-0ubuntu0.13.10.2
	13.04 raring	Fixed 26.0+build2-0ubuntu0.13.04.2
	12.10 quantal	Fixed 26.0+build2-0ubuntu0.12.10.2
	12.04 LTS precise	Fixed 26.0+build2-0ubuntu0.12.04.2
	10.04 LTS lucid	Ignored end of life
thunderbird	13.10 saucy	Fixed 1:24.2.0+build1-0ubuntu0.13.10.1
	13.04 raring	Fixed 1:24.2.0+build1-0ubuntu0.13.04.1
	12.10 quantal	Fixed 1:24.2.0+build1-0ubuntu0.12.10.1
	12.04 LTS precise	Fixed 1:24.2.0+build1-0ubuntu0.12.04.1
	10.04 LTS lucid	Ignored end of life

Severity score breakdown

Parameter	Value
Base score	5.9 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVE-2013-6673

Cvss 3 Severity Score

Description

Status

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references