Mozilla: DOS due to malformed frames in HTTP/2 (MFSA 2015-142)
Published Dec 16, 2015
5.0
MEDIUMCVSS 2.0
EPSS 2.89%
Description
The HTTP/2 implementation in Mozilla Firefox before 43.0 allows remote attackers to cause a denial of service (integer underflow, assertion failure, and application exit) via a malformed PushPromise frame that triggers decompressed-buffer length miscalculation and incorrect memory allocation.
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.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/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 | 2.89% (0.02888) | 86.39th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.89% (0.02888) | 85.02th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.18% (0.01184) | 76.84th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.40% (0.03399) | 78.83th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.18% (0.01184) | 77.32th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.65% (0.04650) | 92.89th | v3 (v2023.03.01) |
| Mar 17, 2024 | 4.65% (0.04650) | 92.39th | v3 (v2023.03.01) |
| Mar 18, 2023 | 6.18% (0.06176) | 92.39th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.51% (0.05507) | 92.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (16)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174083.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174253.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00104.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00007.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00008.html vendor-advisoryx_refsource_SUSE
- http://www.mozilla.org/security/announce/2015/mfsa2015-142.html x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/79280 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034426 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2833-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-7219 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1194820 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1291590 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-7219
- https://security.gentoo.org/glsa/201512-10 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-7219
- https://www.mozilla.org/security/announce/2015/mfsa2015-142.html
Change history (0)
No recorded changes yet.