Description
Mozilla Firefox before 1.5.0.7 and Thunderbird before 1.5.0.7 makes it easy for users to accept self-signed certificates for the auto-update mechanism, which might allow remote user-assisted attackers to use DNS spoofing to trick users into visiting a malicious site and accepting a malicious certificate for the Mozilla update site, which can then be used to install arbitrary code on the next update.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | thunderbird | 1.5.0.7-1 | — |
| Debian 13 | thunderbird | 1.5.0.7-1 | — |
| Debian 12 | thunderbird | 1.5.0.7-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | firefox +1 | 1.5.0.7-0.1.el4 | RHSA-2006:0677, RHSA-2006:0675 |
Advisories 2
- RHSA-2006:0677 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2006:0675 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- ADV-2006-3748 vdb-entry
- 22055 third-party-advisory
- 22195 third-party-advisory
- USN-352-1 vendor-advisory
- 21950 third-party-advisory
- USN-351-1 vendor-advisory
- 22025 third-party-advisory
- 22056 third-party-advisory
- MDKSA-2006:168 vendor-advisory
- 22210 third-party-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2006-224.htm
- 1016851 vdb-entry
- ADV-2008-0083 vdb-entry
- http://www.mozilla.org/security/announce/2006/mfsa2006-58.html
- 21939 third-party-advisory
- ADV-2006-3617 vdb-entry
- RHSA-2006:0677 vendor-advisory
- GLSA-200609-19 vendor-advisory
- SSRT061181 vendor-advisory
- 22274 third-party-advisory
- RHSA-2006:0675 vendor-advisory
- 20042 vdb-entry
- 22001 third-party-advisory
- 20060915 rPSA-2006-0169-1 firefox thunderbird mailing-list
- USN-350-1 vendor-advisory
- mozilla-auto-update-gain-access(28950) vdb-entry
- 21906 third-party-advisory
- GLSA-200610-01 vendor-advisory
- 22074 third-party-advisory
- oval:org.mitre.oval:def:10488 vdb-entry signature
- 22066 third-party-advisory
- 22088 third-party-advisory
- 1016850 vdb-entry
- 21949 third-party-advisory
- SUSE-SA:2006:054 vendor-advisory
- https://issues.rpath.com/browse/RPL-640
- USN-354-1 vendor-advisory
- 22422 third-party-advisory
- MDKSA-2006:169 vendor-advisory
- 21916 third-party-advisory