Read the docs
TI-2017-05402 Aliases CVE-2017-7784GHSA-mhrc-3vwx-42rv

A use-after-free vulnerability can occur when reading an image observer during frame…

Priority MEDIUM 48CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.035 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 22

CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
Show 12 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 52.3.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 55.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 52.3VulnerableMozilla
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.3.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 55.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 52.3 Vulnerable ·Mozilla

Remediation

Red Hat 2 advisories

  • RHSA-2017:2534 Released 2017-08-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-52.3.0-1.el7_4
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-52.3.0-1.el6_9
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-52.3.0-1.el6_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-52.3.0-1.el7_4
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-52.3.0-1.el6_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-52.3.0-1.el7_4
  • RHSA-2017:2456 Released 2017-08-10 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-52.3.0-2.el7_4
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-52.3.0-2.el7_4
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-52.3.0-3.el6_9
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-52.3.0-3.el6_9
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-52.3.0-3.el6_9
    • Red Hat Enterprise Linux Server (v. 6) firefox-52.3.0-3.el6_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-52.3.0-2.el7_4
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-52.3.0-3.el6_9, firefox-52.3.0-3.el6_9.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-52.3.0-2.el7_4, firefox-52.3.0-2.el7_4.ppc
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-52.3.0-3.el6_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-52.3.0-2.el7_4
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-52.3.0-3.el6_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-52.3.0-2.el7_4

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:2456, RHSA-2017:2534
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:2456
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2017:2456, RHSA-2017:2534
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2017:2456
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2017:2456
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2017:2456
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:2456
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2017:2456, RHSA-2017:2534
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:2456, RHSA-2017:2534
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2017:2456, RHSA-2017:2534
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:2456, RHSA-2017:2534
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2017:2456
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:2456

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-7784
  2. 2026-10-03 Alias added: GHSA-mhrc-3vwx-42rv

References

Exploit 1

Advisory 8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences