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CVE-2017-7784 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/errata/RHSA-2017:2456	CVE	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2534	CVE	Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1376087	CVE	ExploitIssue TrackingVendor Advisory
https://security.gentoo.org/glsa/201803-14	CVE	Third Party Advisory
https://www.debian.org/security/2017/dsa-3928	CVE	Third Party Advisory
https://www.debian.org/security/2017/dsa-3968	CVE	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/	CVE	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-19/	CVE	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-20/	CVE	Vendor Advisory
http://www.securityfocus.com/bid/100202	CVE	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039124	CVE	Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:2456	[email protected]	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2534	[email protected]	Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1376087	[email protected]	ExploitIssue TrackingVendor Advisory
https://security.gentoo.org/glsa/201803-14	[email protected]	Third Party Advisory
https://www.debian.org/security/2017/dsa-3928	[email protected]	Third Party Advisory
https://www.debian.org/security/2017/dsa-3968	[email protected]	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/	[email protected]	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-19/	[email protected]	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-20/	[email protected]	Vendor Advisory
http://www.securityfocus.com/bid/100202	[email protected]	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039124	[email protected]	Third Party AdvisoryVDB Entry

see all 22 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	[email protected]

Affected Products

Product	Versions
debian debian linux	8.0 9.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* cpe:2.3:o:debian:debian_linux:9.0:::::::* Remediation No remediation found in references.
redhat enterprise linux	5.0 6.0 7.0
CPE cpe:2.3:o:redhat:enterprise_linux:5.0:::::::* cpe:2.3:o:redhat:enterprise_linux:6.0:::::::* cpe:2.3:o:redhat:enterprise_linux:7.0:::::::* Remediation No remediation found in references.
redhat enterprise linux desktop	5.0 6.0 7.0
CPE cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:::::::* cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:::::::* cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::* Remediation No remediation found in references.
redhat enterprise linux server	5.0 6.0 7.0
CPE cpe:2.3:o:redhat:enterprise_linux_server:5.0:::::::* cpe:2.3:o:redhat:enterprise_linux_server:6.0:::::::* cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::* Remediation No remediation found in references.
redhat enterprise linux server aus	7.3 7.4
CPE cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:::::::* cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:::::::* Remediation No remediation found in references.
redhat enterprise linux server eus	7.3 7.4 7.5
CPE cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:::::::* cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:::::::* cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:::::::* Remediation No remediation found in references.
redhat enterprise linux workstation	5.0 6.0 7.0
CPE cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:::::::* cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:::::::* cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::* Remediation No remediation found in references.
mozilla thunderbird	< 52.3.0
CPE cpe:2.3:a:mozilla:thunderbird:::::::: Remediation No remediation found in references.
mozilla firefox	< 55.0
CPE cpe:2.3:a:mozilla:firefox:::::::: Remediation No remediation found in references.
mozilla firefox esr	< 52.3
CPE cpe:2.3:a:mozilla:firefox_esr:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 3, 2018	Initial Analysis	[email protected]
Jun 13, 2018	CVE Modified	[email protected]

CVE-2017-7784 Details

Description

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References to Advisories, Solutions, and Tools

Weakness Enumeration

Affected Products

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