Mozilla: Out-of-bounds read in PropertyProvider::GetSpacingInternal (MFSA 2016-85)
Published Sep 22, 2016
6.5
MEDIUMCVSS 3.0
EPSS 1.42%
Description
The PropertyProvider::GetSpacingInternal function in Mozilla Firefox before 49.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via text runs in conjunction with a "display: contents" Cascading Style Sheets (CSS) property.
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
No remediation recorded yet.
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:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
AV:N/AC:M/Au:N/C:N/I:N/A:P
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 | 1.42% (0.01416) | 71.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.42% (0.01421) | 69.27th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.65% (0.00647) | 68.35th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.83% (0.01826) | 71.77th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.65% (0.00647) | 69.02th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.84% (0.00839) | 82.78th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.84% (0.00839) | 81.52th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.84% (0.00839) | 79.48th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (10)
- http://www.mozilla.org/security/announce/2016/mfsa2016-85.html x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/93052 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036852 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2016-5271 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1288946 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1377661 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-5271
- https://security.gentoo.org/glsa/201701-15 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-5271
- https://www.mozilla.org/security/announce/2016/mfsa2016-85.html
| Link | Providers | Tags |
|---|---|---|
| http://www.mozilla.org/security/announce/2016/mfsa2016-85.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.securityfocus.com/bid/93052 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1036852 | vdb-entryx_refsource_SECTRACK | |
| https://access.redhat.com/security/cve/CVE-2016-5271 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1288946 | x_refsource_CONFIRMIssue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1377661 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-5271 | ||
| https://security.gentoo.org/glsa/201701-15 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2016-5271 | ||
| https://www.mozilla.org/security/announce/2016/mfsa2016-85.html |
Change history (0)
No recorded changes yet.