Mozilla: Use-after-free in crash generation server
Published Jul 23, 2019
8.3
HIGHCVSS 3.1
EPSS 0.95%
Description
A race condition is present in the crash generation server used to generate data for the crash reporter. This issue can lead to a use-after-free in the main process, resulting in a potentially exploitable crash and a sandbox escape. *Note: this vulnerability only affects Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<67
- Version
-
- Version unspecifiedStatusaffectedConstraints<60.7
- Version
-
- Version unspecifiedStatusaffectedConstraints<60.7
- 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 | n/a |
| ||||||
| Mozilla | Firefox ESR | n/a |
| ||||||
| Mozilla | Thunderbird | n/a |
|
- < 67.0
- < 60.7
- < 60.7
No data.
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
Red Hat Enterprise Linux 8
firefox
Not affected
Red Hat Enterprise Linux 8
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 |
| Red Hat Enterprise Linux 8 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 8 | 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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:H/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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.95% (0.00954) | 60.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.95% (0.00954) | 56.59th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.34% (0.00343) | 54.75th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.27% (0.00267) | 68.51th | v3 (v2023.03.01) |
| Jul 16, 2024 | 0.27% (0.00267) | 67.95th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.26% (0.00262) | 64.98th | v3 (v2023.03.01) |
| May 27, 2023 | 0.26% (0.00262) | 62.47th | v3 (v2023.03.01) |
| May 12, 2023 | 0.27% (0.00270) | 63.00th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.23% (0.00226) | 58.99th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 27.77% (0.27766) | 95.97th | v2 (v2022.01.01) |
| Feb 3, 2022 | 35.03% (0.35026) | 97.90th | v1 |
| Jan 6, 2022 | 35.03% (0.35026) | 97.88th | v1 |
| Sep 1, 2021 | 10.73% (0.10726) | 95.25th | v1 |
| Apr 14, 2021 | 10.73% (0.10726) | 0.00th | v1 |
References (9)
- https://access.redhat.com/security/cve/CVE-2019-9818 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1542581 x_refsource_MISCIssue TrackingPermissions Required
- https://bugzilla.redhat.com/show_bug.cgi?id=1712627 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2019-9818
- https://www.cve.org/CVERecord?id=CVE-2019-9818
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-14/#CVE-2019-9818
- https://www.mozilla.org/security/advisories/mfsa2019-13/ x_refsource_MISCVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-14/ x_refsource_MISCVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-15/ x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2019-9818 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1542581 | x_refsource_MISCIssue TrackingPermissions Required | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1712627 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-9818 | ||
| https://www.cve.org/CVERecord?id=CVE-2019-9818 | ||
| https://www.mozilla.org/en-US/security/advisories/mfsa2019-14/#CVE-2019-9818 | ||
| https://www.mozilla.org/security/advisories/mfsa2019-13/ | x_refsource_MISCVendor Advisory | |
| https://www.mozilla.org/security/advisories/mfsa2019-14/ | x_refsource_MISCVendor Advisory | |
| https://www.mozilla.org/security/advisories/mfsa2019-15/ | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.