Mozilla: Use-after-free during mouse event handling (MFSA 2018-03)
Published Jun 11, 2018
9.8
CRITICALCVSS 3.0
EPSS 3.03%
Description
A use-after-free vulnerability can occur during mouse event handling due to issues with multiprocess support. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<58
- Version
-
- Version unspecifiedStatusaffectedConstraints<52.6
- Version
-
- Version unspecifiedStatusaffectedConstraints<52.6
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mozilla | Firefox | n/a |
| ||||||
| Mozilla | Firefox ESR | n/a |
| ||||||
| Mozilla | Thunderbird | n/a |
|
Configuration 1
- 7.0
- 8.0
- 9.0
Configuration 2
- 6.0
- 7.0
- 6.0
- 7.0
- 7.4
- 7.4
- 7.5
- 6.0
- 7.0
Configuration 5
- < 52.6.0
Configuration 6
- 14.04
- 16.04
- 17.10
No data.
Red Hat Enterprise Linux 6
firefox-0:52.6.0-1.el6_9
Fixed · RHSA-2018:0122
Red Hat Enterprise Linux 6
thunderbird-0:52.6.0-1.el6_9
Fixed · RHSA-2018:0262
Red Hat Enterprise Linux 7
firefox-0:52.6.0-1.el7_4
Fixed · RHSA-2018:0122
Red Hat Enterprise Linux 7
thunderbird-0:52.6.0-1.el7_4
Fixed · RHSA-2018:0262
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox-0:52.6.0-1.el6_9 | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux 6 | thunderbird-0:52.6.0-1.el6_9 | Fixed | RHSA-2018:0262 |
| Red Hat Enterprise Linux 7 | firefox-0:52.6.0-1.el7_4 | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux 7 | thunderbird-0:52.6.0-1.el7_4 | Fixed | RHSA-2018:0262 |
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:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.03% (0.03027) | 87.01th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.07% (0.03066) | 85.87th | v5 (v2026.06.15) |
| Dec 26, 2025 | 2.94% (0.02935) | 86.01th | v4 (v2025.03.14) |
| Nov 18, 2025 | 4.04% (0.04038) | 87.36th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.65% (0.02654) | 84.46th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.41% (0.06408) | 84.61th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.70% (0.02704) | 84.91th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.42% (0.00424) | 75.12th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.42% (0.00418) | 73.45th | v3 (v2023.03.01) |
| Jan 5, 2024 | 0.42% (0.00418) | 71.44th | v3 (v2023.03.01) |
| Dec 12, 2023 | 0.53% (0.00533) | 74.48th | v3 (v2023.03.01) |
| Nov 2, 2023 | 0.82% (0.00816) | 79.94th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.90% (0.00895) | 80.65th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.80% (0.00795) | 78.93th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.88% (0.02880) | 63.65th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.88% (0.02880) | 0.00th | v1 |
References (18)
- http://www.securityfocus.com/bid/102783 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040270 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:0122 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0262 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-5103 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1423159 x_refsource_CONFIRMIssue TrackingPermissions RequiredThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1537823 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/01/msg00030.html mailing-listx_refsource_MLISTThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/01/msg00036.html mailing-listx_refsource_MLISTThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-5103
- https://usn.ubuntu.com/3544-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-5103
- https://www.debian.org/security/2018/dsa-4096 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.debian.org/security/2018/dsa-4102 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-03/#CVE-2018-5103
- https://www.mozilla.org/security/advisories/mfsa2018-02/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-03/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-04/ x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.