Mozilla: Use-after-free with image observers (MFSA 2017-19)
Published Jun 11, 2018
9.8
CRITICALCVSS 3.0
EPSS 3.57%
Description
A use-after-free vulnerability can occur when reading an image observer during frame reconstruction after the observer has been freed. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
Affected products
No data.
Configuration 1
- 8.0
- 9.0
Configuration 2
- 5.0
- 6.0
- 7.0
- 5.0
- 6.0
- 7.0
- 5.0
- 6.0
- 7.0
- 7.3
- 7.4
- 7.3
- 7.4
- 7.5
- 5.0
- 6.0
- 7.0
Configuration 3
- < 52.3.0
Configuration 5
- < 52.3
No data.
Red Hat Enterprise Linux 6
firefox-0:52.3.0-3.el6_9
Fixed · RHSA-2017:2456
Red Hat Enterprise Linux 6
thunderbird-0:52.3.0-1.el6_9
Fixed · RHSA-2017:2534
Red Hat Enterprise Linux 7
firefox-0:52.3.0-2.el7_4
Fixed · RHSA-2017:2456
Red Hat Enterprise Linux 7
thunderbird-0:52.3.0-1.el7_4
Fixed · RHSA-2017:2534
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox-0:52.3.0-3.el6_9 | Fixed | RHSA-2017:2456 |
| Red Hat Enterprise Linux 6 | thunderbird-0:52.3.0-1.el6_9 | Fixed | RHSA-2017:2534 |
| Red Hat Enterprise Linux 7 | firefox-0:52.3.0-2.el7_4 | Fixed | RHSA-2017:2456 |
| Red Hat Enterprise Linux 7 | thunderbird-0:52.3.0-1.el7_4 | Fixed | RHSA-2017:2534 |
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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.57% (0.03572) | 88.99th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.62% (0.03618) | 87.99th | v5 (v2026.06.15) |
| Sep 8, 2025 | 5.48% (0.05479) | 89.83th | v4 (v2025.03.14) |
| Mar 30, 2025 | 6.94% (0.06938) | 90.53th | v4 (v2025.03.14) |
| Mar 29, 2025 | 28.58% (0.28583) | 94.49th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.06% (0.07062) | 90.84th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.68% (0.00675) | 80.53th | v3 (v2023.03.01) |
| Apr 11, 2024 | 0.67% (0.00666) | 79.40th | v3 (v2023.03.01) |
| Dec 12, 2023 | 0.67% (0.00666) | 77.39th | v3 (v2023.03.01) |
| Nov 2, 2023 | 0.79% (0.00790) | 79.62th | v3 (v2023.03.01) |
| Jun 5, 2023 | 0.80% (0.00804) | 79.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.70% (0.00696) | 77.14th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.48% (0.02476) | 54.92th | v1 |
| Jan 6, 2022 | 2.48% (0.02476) | 54.49th | v1 |
| Sep 1, 2021 | 2.48% (0.02476) | 78.74th | v1 |
| Apr 14, 2021 | 2.48% (0.02476) | 0.00th | v1 |
References (16)
- http://www.securityfocus.com/bid/100202 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039124 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2456 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2534 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-7784 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1376087 x_refsource_CONFIRMExploitIssue TrackingVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1479201 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-7784
- https://security.gentoo.org/glsa/201803-14 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-7784
- https://www.debian.org/security/2017/dsa-3928 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.debian.org/security/2017/dsa-3968 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-19/#CVE-2017-7784
- https://www.mozilla.org/security/advisories/mfsa2017-18/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-19/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-20/ x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.