Mozilla: Memory leak in mozTCPSocket to servers (MFSA 2015-97)
Published Sep 24, 2015
5.0
MEDIUMCVSS 2.0
EPSS 1.56%
Description
The TCP Socket API implementation in Mozilla Firefox before 41.0 mishandles array boundaries that were established with a navigator.mozTCPSocket.open method call and send method calls, which allows remote TCP servers to obtain sensitive information from process memory by reading packet data, as demonstrated by availability of this API in a Firefox OS application.
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.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/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 | 1.56% (0.01563) | 74.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.56% (0.01563) | 71.95th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.57% (0.00575) | 66.16th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.88% (0.01882) | 72.15th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.57% (0.00575) | 66.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.35% (0.00347) | 72.54th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.35% (0.00347) | 70.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.35% (0.00347) | 67.17th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (12)
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html vendor-advisoryx_refsource_SUSE
- http://www.mozilla.org/security/announce/2015/mfsa2015-97.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/76815 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033640 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2015-4503 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=994337 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1265591 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-4503
- https://www.cve.org/CVERecord?id=CVE-2015-4503
- https://www.mozilla.org/en-US/security/advisories/mfsa2015-97/
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html | vendor-advisoryx_refsource_SUSE | |
| http://www.mozilla.org/security/announce/2015/mfsa2015-97.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/76815 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1033640 | vdb-entryx_refsource_SECTRACK | |
| https://access.redhat.com/security/cve/CVE-2015-4503 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=994337 | x_refsource_CONFIRM | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1265591 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-4503 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-4503 | ||
| https://www.mozilla.org/en-US/security/advisories/mfsa2015-97/ |
Change history (0)
No recorded changes yet.