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01 Record

CVE-2017-7784

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

UnratedPUBLISHEDCNA: mozilla
CNA base scoreUnratedNo CNA CVSS vector

02 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
3.50% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 89.0% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-06-11 21:00Z8 YR AGO
Last updated
2024-08-05 16:12Z2 YR AGO
Reserved
2017-04-12
Assigning CNA
mozilla
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
652553975b4ea6142d9e4515f10ea2b124e97746b73c86e91f0b1a1f1ffc0793

05 Affected products

VendorProductVersionsPlatforms
debiandebian_linuxNot specified—
mozillafirefoxNot specified—
mozillafirefox_esrNot specified—
mozillathunderbirdNot specified—
redhatenterprise_linuxNot specified—
redhatenterprise_linux_desktopNot specified—
redhatenterprise_linux_serverNot specified—
redhatenterprise_linux_server_ausNot specified—
redhatenterprise_linux_server_eusNot specified—
redhatenterprise_linux_workstationNot specified—

06 References

07 Fixed in

Arch Linux

  • firefox
    Fixed in 55.0-1
  • thunderbird
    Fixed in 52.3.0-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • firefox-esr
    Fixed in 52.3.0esr-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • firefox-esr
    Fixed in 52.3.0esr-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • firefox-esr
    Fixed in 52.3.0esr-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • firefox
    Fixed in 55.0.1+build2-0ubuntu0.14.04.2
  • thunderbird
    Fixed in 1:52.3.0+build1-0ubuntu0.14.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • firefox
    Fixed in 55.0.1+build2-0ubuntu0.16.04.2
  • thunderbird
    Fixed in 1:52.3.0+build1-0ubuntu0.16.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • mozjs38
    No fix yet
  • thunderbird
    Fixed in 1:52.4.0+build1-0ubuntu2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.