Back
CVE-2017-7784
CRITICAL
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.
Published: Jun 11, 2018
Modified: Jun 17, 2026
CWE-416
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (22)
| Vendor | Product | Version |
|---|---|---|
| debian | debian_linux | 8.0 |
| debian | debian_linux | 9.0 |
| redhat | enterprise_linux | 5.0 |
| redhat | enterprise_linux | 6.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux_desktop | 5.0 |
| redhat | enterprise_linux_desktop | 6.0 |
| redhat | enterprise_linux_desktop | 7.0 |
| redhat | enterprise_linux_server | 5.0 |
| redhat | enterprise_linux_server | 6.0 |
| redhat | enterprise_linux_server | 7.0 |
| redhat | enterprise_linux_server_aus | 7.3 |
| redhat | enterprise_linux_server_aus | 7.4 |
| redhat | enterprise_linux_server_eus | 7.3 |
| redhat | enterprise_linux_server_eus | 7.4 |
| redhat | enterprise_linux_server_eus | 7.5 |
| redhat | enterprise_linux_workstation | 5.0 |
| redhat | enterprise_linux_workstation | 6.0 |
| redhat | enterprise_linux_workstation | 7.0 |
| mozilla | thunderbird | * < 52.3.0 |
…and 2 more
GitHub Security Advisory GHSA-mhrc-3vwx-42rv
A use-after-free vulnerability can occur when reading an image observer during frame...
References (22)
- http://www.securityfocus.com/bid/100202 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039124 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2456 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2534 Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1376087 Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201803-14 Third Party Advisory
- https://www.debian.org/security/2017/dsa-3928 Third Party Advisory
- https://www.debian.org/security/2017/dsa-3968 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-18/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-19/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-20/ Vendor Advisory
- http://www.securityfocus.com/bid/100202 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039124 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2456 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2534 Third Party Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
3.57%
Top 12% most likely to be exploited
Threat Score
40.3 / 100
Data Sources
NVD
EPSS
GitHub