Mozilla: Spoofing attack through text injection into internal error pages (MFSA 2016-83)
Published Aug 5, 2016
4.3
MEDIUMCVSS 3.0
EPSS 1.23%
Description
Mozilla Firefox before 48.0 does not properly set the LINKABLE and URI_SAFE_FOR_UNTRUSTED_CONTENT flags of about: URLs that are used for error pages, which makes it easier for remote attackers to conduct spoofing attacks via a crafted URL, as demonstrated by misleading text after an about:neterror?d= substring.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
firefox
Not affected
Red Hat Enterprise Linux 5
thunderbird
Not affected
Red Hat Enterprise Linux 6
firefox
Not affected
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 7
firefox
Not affected
Red Hat Enterprise Linux 7
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 5 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 6 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 7 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 7 | thunderbird | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.23% (0.01228) | 67.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.24% (0.01239) | 65.12th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.44% (0.00443) | 60.44th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.44% (0.01444) | 68.80th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.44% (0.00443) | 61.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.59% (0.00591) | 79.03th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.59% (0.00591) | 77.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.59% (0.00591) | 74.97th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
References (13)
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html vendor-advisoryx_refsource_SUSE
- http://www.mozilla.org/security/announce/2016/mfsa2016-83.html x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/92260 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036508 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-3044-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2016-5268 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1253673 x_refsource_CONFIRMIssue TrackingPermissions Required
- https://bugzilla.redhat.com/show_bug.cgi?id=1361996 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-5268
- https://security.gentoo.org/glsa/201701-15 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-5268
- https://www.mozilla.org/security/announce/2016/mfsa2016-83.html
Change history (0)
No recorded changes yet.