Mozilla: Integer overflow during Unicode conversion (MFSA 2018-07)
Published Jun 11, 2018
7.3
HIGHCVSS 3.0
EPSS 3.26%
Description
An integer overflow can occur during conversion of text to some Unicode character sets due to an unchecked length parameter. This vulnerability affects Firefox ESR < 52.7 and Thunderbird < 52.7.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<52.7
- Version
-
- Version unspecifiedStatusaffectedConstraints<52.7
- 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 ESR | n/a |
| ||||||
| Mozilla | Thunderbird | n/a |
|
Configuration 1
- 6.0
- 7.0
- 6.0
- 7.0
- 7.4
- 7.2
- 7.4
- 7.5
- 6.0
- 7.0
Configuration 2
- 7.0
- 8.0
- 9.0
Configuration 3
- 14.04
- 16.04
- 17.10
Configuration 4
- < 52.7.0
- < 52.7.0
No data.
Red Hat Enterprise Linux 6
firefox-0:52.7.0-1.el6_9
Fixed · RHSA-2018:0526
Red Hat Enterprise Linux 6
thunderbird-0:52.7.0-1.el6_9
Fixed · RHSA-2018:0647
Red Hat Enterprise Linux 7
firefox-0:52.7.0-1.el7_4
Fixed · RHSA-2018:0527
Red Hat Enterprise Linux 7
thunderbird-0:52.7.0-1.el7_4
Fixed · RHSA-2018:0648
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox-0:52.7.0-1.el6_9 | Fixed | RHSA-2018:0526 |
| Red Hat Enterprise Linux 6 | thunderbird-0:52.7.0-1.el6_9 | Fixed | RHSA-2018:0647 |
| Red Hat Enterprise Linux 7 | firefox-0:52.7.0-1.el7_4 | Fixed | RHSA-2018:0527 |
| Red Hat Enterprise Linux 7 | thunderbird-0:52.7.0-1.el7_4 | Fixed | RHSA-2018:0648 |
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:L/I:L/A:L
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 2, 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 (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.26% (0.03264) | 87.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.26% (0.03264) | 86.73th | v5 (v2026.06.15) |
| Dec 28, 2025 | 5.73% (0.05728) | 90.14th | v4 (v2025.03.14) |
| Dec 27, 2025 | 4.22% (0.04220) | 88.45th | v4 (v2025.03.14) |
| Oct 28, 2025 | 5.99% (0.05987) | 90.25th | v4 (v2025.03.14) |
| Oct 27, 2025 | 4.42% (0.04415) | 88.53th | v4 (v2025.03.14) |
| Oct 1, 2025 | 5.99% (0.05987) | 90.34th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.48% (0.04484) | 88.06th | v4 (v2025.03.14) |
| Mar 29, 2025 | 20.13% (0.20134) | 92.65th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.57% (0.04567) | 88.47th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00264) | 66.53th | v3 (v2023.03.01) |
| Jun 7, 2024 | 0.26% (0.00260) | 65.79th | v3 (v2023.03.01) |
| Jan 29, 2024 | 0.26% (0.00260) | 63.78th | v3 (v2023.03.01) |
| Jan 5, 2024 | 0.23% (0.00233) | 61.38th | v3 (v2023.03.01) |
| Dec 12, 2023 | 0.30% (0.00297) | 65.98th | v3 (v2023.03.01) |
| Nov 2, 2023 | 0.41% (0.00407) | 70.94th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.55% (0.00554) | 74.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.54% (0.00538) | 73.68th | 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 | 3.48% (0.03480) | 68.33th | v5 (v2026.06.15) |
| Apr 14, 2021 | 3.48% (0.03480) | 0.00th | v1 |
References (21)
- http://www.securityfocus.com/bid/103384 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040514 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:0526 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0527 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0647 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0648 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-5144 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1440926 x_refsource_CONFIRMIssue TrackingPermissions Required
- https://bugzilla.redhat.com/show_bug.cgi?id=1555132 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/03/msg00010.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00029.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-5144
- https://security.gentoo.org/glsa/201810-01 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://security.gentoo.org/glsa/201811-13 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://usn.ubuntu.com/3545-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-5144
- https://www.debian.org/security/2018/dsa-4139 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.debian.org/security/2018/dsa-4155 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-07/#CVE-2018-5144
- https://www.mozilla.org/security/advisories/mfsa2018-07/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-09/ x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.