Mozilla Firefox and Firefox ESR CVE-2019-17026 Type Confusion Remote Code Execution Vulnerability

Description

Mozilla Firefox and Firefox ESR are prone to a remote code-execution vulnerability. An attacker can exploit this issue to execute arbitrary code in the context of the application.

Technologies Affected

• Mozilla Firefox 0.1
• Mozilla Firefox 0.10.0
• Mozilla Firefox 0.10.1
• Mozilla Firefox 0.2
• Mozilla Firefox 0.3
• Mozilla Firefox 0.4
• Mozilla Firefox 0.5
• Mozilla Firefox 0.6
• Mozilla Firefox 0.6.1
• Mozilla Firefox 0.7
• Mozilla Firefox 0.7.1
• Mozilla Firefox 0.8.0
• Mozilla Firefox 0.9 Rc
• Mozilla Firefox 0.9.0
• Mozilla Firefox 0.9.0 Rc
• Mozilla Firefox 0.9.1
• Mozilla Firefox 0.9.2
• Mozilla Firefox 0.9.3
• Mozilla Firefox 1.0 Preview Release
• Mozilla Firefox 1.0.0
• Mozilla Firefox 1.0.1
• Mozilla Firefox 1.0.2
• Mozilla Firefox 1.0.3
• Mozilla Firefox 1.0.4
• Mozilla Firefox 1.0.5
• Mozilla Firefox 1.0.6
• Mozilla Firefox 1.0.7
• Mozilla Firefox 1.0.8
• Mozilla Firefox 1.4.1
• Mozilla Firefox 1.5.0 12
• Mozilla Firefox 1.5.0
• Mozilla Firefox 1.5.0 Beta 1
• Mozilla Firefox 1.5.0 Beta 2
• Mozilla Firefox 1.5.0.1
• Mozilla Firefox 1.5.0.10
• Mozilla Firefox 1.5.0.11
• Mozilla Firefox 1.5.0.2
• Mozilla Firefox 1.5.0.3
• Mozilla Firefox 1.5.0.4
• Mozilla Firefox 1.5.0.5
• Mozilla Firefox 1.5.0.6
• Mozilla Firefox 1.5.0.7
• Mozilla Firefox 1.5.0.8
• Mozilla Firefox 1.5.0.9
• Mozilla Firefox 1.5.1
• Mozilla Firefox 1.5.2
• Mozilla Firefox 1.5.3
• Mozilla Firefox 1.5.4
• Mozilla Firefox 1.5.5
• Mozilla Firefox 1.5.6
• Mozilla Firefox 1.5.7
• Mozilla Firefox 1.5.8
• Mozilla Firefox 1.8
• Mozilla Firefox 10
• Mozilla Firefox 10.0
• Mozilla Firefox 10.0.1
• Mozilla Firefox 10.0.10
• Mozilla Firefox 10.0.11
• Mozilla Firefox 10.0.12
• Mozilla Firefox 10.0.2
• Mozilla Firefox 10.0.3
• Mozilla Firefox 10.0.4
• Mozilla Firefox 10.0.5
• Mozilla Firefox 10.0.6
• Mozilla Firefox 10.0.7
• Mozilla Firefox 10.0.8
• Mozilla Firefox 10.0.9
• Mozilla Firefox 11.0
• Mozilla Firefox 12.0
• Mozilla Firefox 12.0 Beta6
• Mozilla Firefox 13.0
• Mozilla Firefox 13.0.1
• Mozilla Firefox 14
• Mozilla Firefox 14.0
• Mozilla Firefox 14.0.1
• Mozilla Firefox 14.01
• Mozilla Firefox 15
• Mozilla Firefox 15.0
• Mozilla Firefox 15.0.1
• Mozilla Firefox 16
• Mozilla Firefox 16.0
• Mozilla Firefox 16.0.1
• Mozilla Firefox 16.0.2
• Mozilla Firefox 17.0
• Mozilla Firefox 17.0.1
• Mozilla Firefox 17.0.10
• Mozilla Firefox 17.0.11
• Mozilla Firefox 17.0.2
• Mozilla Firefox 17.0.3
• Mozilla Firefox 17.0.4
• Mozilla Firefox 17.0.5
• Mozilla Firefox 17.0.6
• Mozilla Firefox 17.0.7
• Mozilla Firefox 17.0.8
• Mozilla Firefox 17.0.9
• Mozilla Firefox 18.0
• Mozilla Firefox 18.0.1
• Mozilla Firefox 18.0.2
• Mozilla Firefox 19.0
• Mozilla Firefox 19.0.1
• Mozilla Firefox 19.0.2
• Mozilla Firefox 2.0 .1
• Mozilla Firefox 2.0 .10
• Mozilla Firefox 2.0 .4
• Mozilla Firefox 2.0 .5
• Mozilla Firefox 2.0 .6
• Mozilla Firefox 2.0 .7
• Mozilla Firefox 2.0 .9
• Mozilla Firefox 2.0 8
• Mozilla Firefox 2.0
• Mozilla Firefox 2.0 Beta 1
• Mozilla Firefox 2.0 Beta1
• Mozilla Firefox 2.0 RC2
• Mozilla Firefox 2.0 RC3
• Mozilla Firefox 2.0.0 .19
• Mozilla Firefox 2.0.0 20
• Mozilla Firefox 2.0.0.1
• Mozilla Firefox 2.0.0.10
• Mozilla Firefox 2.0.0.11
• Mozilla Firefox 2.0.0.12
• Mozilla Firefox 2.0.0.13
• Mozilla Firefox 2.0.0.14
• Mozilla Firefox 2.0.0.15
• Mozilla Firefox 2.0.0.16
• Mozilla Firefox 2.0.0.17
• Mozilla Firefox 2.0.0.18
• Mozilla Firefox 2.0.0.19
• Mozilla Firefox 2.0.0.2
• Mozilla Firefox 2.0.0.21
• Mozilla Firefox 2.0.0.3
• Mozilla Firefox 2.0.0.4
• Mozilla Firefox 2.0.0.5
• Mozilla Firefox 2.0.0.6
• Mozilla Firefox 2.0.0.7
• Mozilla Firefox 2.0.0.8
• Mozilla Firefox 2.0.0.9
• Mozilla Firefox 20.0
• Mozilla Firefox 20.0.1
• Mozilla Firefox 20.0a1
• Mozilla Firefox 21.0
• Mozilla Firefox 22.0
• Mozilla Firefox 22.0.0.4917
• Mozilla Firefox 23.0
• Mozilla Firefox 23.0.1
• Mozilla Firefox 24.0
• Mozilla Firefox 24.1
• Mozilla Firefox 24.1.1
• Mozilla Firefox 25.0
• Mozilla Firefox 25.0.1
• Mozilla Firefox 26
• Mozilla Firefox 26.0
• Mozilla Firefox 27
• Mozilla Firefox 27.0
• Mozilla Firefox 27.0.1
• Mozilla Firefox 28
• Mozilla Firefox 28.0
• Mozilla Firefox 28.0.1
• Mozilla Firefox 29
• Mozilla Firefox 29.0
• Mozilla Firefox 29.0.1
• Mozilla Firefox 3.0
• Mozilla Firefox 3.0 Alpha
• Mozilla Firefox 3.0 Beta 5
• Mozilla Firefox 3.0 Beta2
• Mozilla Firefox 3.0 Beta5
• Mozilla Firefox 3.0.1
• Mozilla Firefox 3.0.10
• Mozilla Firefox 3.0.11
• Mozilla Firefox 3.0.12
• Mozilla Firefox 3.0.13
• Mozilla Firefox 3.0.14
• Mozilla Firefox 3.0.15
• Mozilla Firefox 3.0.16
• Mozilla Firefox 3.0.17
• Mozilla Firefox 3.0.18
• Mozilla Firefox 3.0.19
• Mozilla Firefox 3.0.2
• Mozilla Firefox 3.0.3
• Mozilla Firefox 3.0.4
• Mozilla Firefox 3.0.5
• Mozilla Firefox 3.0.6
• Mozilla Firefox 3.0.7
• Mozilla Firefox 3.0.7 Beta
• Mozilla Firefox 3.0.8
• Mozilla Firefox 3.0.9
• Mozilla Firefox 3.0Beta5
• Mozilla Firefox 3.1
• Mozilla Firefox 3.1 Beta 1
• Mozilla Firefox 3.1 Beta 2
• Mozilla Firefox 3.1 Beta 3
• Mozilla Firefox 3.5.0
• Mozilla Firefox 3.5.1
• Mozilla Firefox 3.5.10
• Mozilla Firefox 3.5.11
• Mozilla Firefox 3.5.12
• Mozilla Firefox 3.5.13
• Mozilla Firefox 3.5.14
• Mozilla Firefox 3.5.15
• Mozilla Firefox 3.5.16
• Mozilla Firefox 3.5.17
• Mozilla Firefox 3.5.18
• Mozilla Firefox 3.5.19
• Mozilla Firefox 3.5.2
• Mozilla Firefox 3.5.3
• Mozilla Firefox 3.5.4
• Mozilla Firefox 3.5.5
• Mozilla Firefox 3.5.6
• Mozilla Firefox 3.5.7
• Mozilla Firefox 3.5.8
• Mozilla Firefox 3.5.9
• Mozilla Firefox 3.6
• Mozilla Firefox 3.6 A1 Pre
• Mozilla Firefox 3.6 Beta 2
• Mozilla Firefox 3.6 Beta 3
• Mozilla Firefox 3.6.1
• Mozilla Firefox 3.6.10
• Mozilla Firefox 3.6.11
• Mozilla Firefox 3.6.12
• Mozilla Firefox 3.6.13
• Mozilla Firefox 3.6.14
• Mozilla Firefox 3.6.15
• Mozilla Firefox 3.6.16
• Mozilla Firefox 3.6.17
• Mozilla Firefox 3.6.18
• Mozilla Firefox 3.6.19
• Mozilla Firefox 3.6.2
• Mozilla Firefox 3.6.20
• Mozilla Firefox 3.6.21
• Mozilla Firefox 3.6.22
• Mozilla Firefox 3.6.23
• Mozilla Firefox 3.6.24
• Mozilla Firefox 3.6.25
• Mozilla Firefox 3.6.26
• Mozilla Firefox 3.6.27
• Mozilla Firefox 3.6.28
• Mozilla Firefox 3.6.3
• Mozilla Firefox 3.6.4
• Mozilla Firefox 3.6.5
• Mozilla Firefox 3.6.6
• Mozilla Firefox 3.6.7
• Mozilla Firefox 3.6.8
• Mozilla Firefox 3.7 A1 Pre
• Mozilla Firefox 30
• Mozilla Firefox 30.0
• Mozilla Firefox 31
• Mozilla Firefox 31.0
• Mozilla Firefox 31.1
• Mozilla Firefox 31.1.0
• Mozilla Firefox 31.6
• Mozilla Firefox 31.8
• Mozilla Firefox 31.8.0
• Mozilla Firefox 32
• Mozilla Firefox 32.0
• Mozilla Firefox 32.0.3
• Mozilla Firefox 33
• Mozilla Firefox 33.0
• Mozilla Firefox 34
• Mozilla Firefox 34.0.5
• Mozilla Firefox 35
• Mozilla Firefox 35.0.1
• Mozilla Firefox 36
• Mozilla Firefox 36.0.3
• Mozilla Firefox 36.0.4
• Mozilla Firefox 37
• Mozilla Firefox 37.0.1
• Mozilla Firefox 37.0.2
• Mozilla Firefox 38
• Mozilla Firefox 39
• Mozilla Firefox 39.0.3
• Mozilla Firefox 4.0
• Mozilla Firefox 4.0 BETA2
• Mozilla Firefox 4.0 Beta1
• Mozilla Firefox 4.0 Beta10
• Mozilla Firefox 4.0 Beta11
• Mozilla Firefox 4.0 Beta12
• Mozilla Firefox 4.0 Beta3
• Mozilla Firefox 4.0 Beta4
• Mozilla Firefox 4.0 Beta5
• Mozilla Firefox 4.0 Beta6
• Mozilla Firefox 4.0 Beta7
• Mozilla Firefox 4.0 Beta8
• Mozilla Firefox 4.0 Beta9
• Mozilla Firefox 4.0.1
• Mozilla Firefox 40
• Mozilla Firefox 40.0.3
• Mozilla Firefox 41
• Mozilla Firefox 41.0.2
• Mozilla Firefox 42
• Mozilla Firefox 43
• Mozilla Firefox 43.0.1
• Mozilla Firefox 43.0.2
• Mozilla Firefox 44
• Mozilla Firefox 44.0.2
• Mozilla Firefox 45
• Mozilla Firefox 45.0.2
• Mozilla Firefox 46
• Mozilla Firefox 46.0.1
• Mozilla Firefox 47
• Mozilla Firefox 48
• Mozilla Firefox 49
• Mozilla Firefox 49.0.1
• Mozilla Firefox 49.0.2
• Mozilla Firefox 5.0
• Mozilla Firefox 5.0.1
• Mozilla Firefox 50
• Mozilla Firefox 50.0.1
• Mozilla Firefox 50.0.2
• Mozilla Firefox 50.1
• Mozilla Firefox 51
• Mozilla Firefox 52
• Mozilla Firefox 52.0.1
• Mozilla Firefox 53
• Mozilla Firefox 53.0.2
• Mozilla Firefox 54
• Mozilla Firefox 55
• Mozilla Firefox 56
• Mozilla Firefox 57
• Mozilla Firefox 57.0.1
• Mozilla Firefox 57.0.2
• Mozilla Firefox 57.0.4
• Mozilla Firefox 58
• Mozilla Firefox 58.0.1
• Mozilla Firefox 59
• Mozilla Firefox 59.0.1
• Mozilla Firefox 59.0.2
• Mozilla Firefox 6
• Mozilla Firefox 6.0
• Mozilla Firefox 6.0.1
• Mozilla Firefox 6.0.2
• Mozilla Firefox 60
• Mozilla Firefox 60.0.2
• Mozilla Firefox 61
• Mozilla Firefox 62
• Mozilla Firefox 62.0.2
• Mozilla Firefox 62.0.3
• Mozilla Firefox 63
• Mozilla Firefox 63.0.3
• Mozilla Firefox 64
• Mozilla Firefox 65
• Mozilla Firefox 65.0.1
• Mozilla Firefox 65.0.2
• Mozilla Firefox 66
• Mozilla Firefox 66.0.1
• Mozilla Firefox 66.0.2
• Mozilla Firefox 66.0.3
• Mozilla Firefox 66.0.4
• Mozilla Firefox 66.0.5
• Mozilla Firefox 67
• Mozilla Firefox 67.0.2
• Mozilla Firefox 67.0.3
• Mozilla Firefox 67.0.4
• Mozilla Firefox 68
• Mozilla Firefox 68.0.1
• Mozilla Firefox 68.0.2
• Mozilla Firefox 69
• Mozilla Firefox 69.0.1
• Mozilla Firefox 69.0.2
• Mozilla Firefox 7
• Mozilla Firefox 7.0
• Mozilla Firefox 7.0.1
• Mozilla Firefox 70
• Mozilla Firefox 71
• Mozilla Firefox 72
• Mozilla Firefox 8.0
• Mozilla Firefox 8.0.1
• Mozilla Firefox 9.0
• Mozilla Firefox 9.0.1
• Mozilla Firefox ESR 10.0.1
• Mozilla Firefox ESR 10.0.10
• Mozilla Firefox ESR 10.0.11
• Mozilla Firefox ESR 10.0.12
• Mozilla Firefox ESR 10.0.2
• Mozilla Firefox ESR 10.0.3
• Mozilla Firefox ESR 10.0.4
• Mozilla Firefox ESR 10.0.5
• Mozilla Firefox ESR 10.0.6
• Mozilla Firefox ESR 10.0.7
• Mozilla Firefox ESR 10.0.8
• Mozilla Firefox ESR 10.0.9
• Mozilla Firefox ESR 17.0
• Mozilla Firefox ESR 17.0.1
• Mozilla Firefox ESR 17.0.10
• Mozilla Firefox ESR 17.0.11
• Mozilla Firefox ESR 17.0.2
• Mozilla Firefox ESR 17.0.3
• Mozilla Firefox ESR 17.0.4
• Mozilla Firefox ESR 17.0.5
• Mozilla Firefox ESR 17.0.6
• Mozilla Firefox ESR 17.0.7
• Mozilla Firefox ESR 17.0.8
• Mozilla Firefox ESR 17.0.9
• Mozilla Firefox ESR 24.0
• Mozilla Firefox ESR 24.0.1
• Mozilla Firefox ESR 24.0.2
• Mozilla Firefox ESR 24.1
• Mozilla Firefox ESR 24.1.0
• Mozilla Firefox ESR 24.1.1
• Mozilla Firefox ESR 24.2
• Mozilla Firefox ESR 24.3
• Mozilla Firefox ESR 24.4
• Mozilla Firefox ESR 24.5
• Mozilla Firefox ESR 24.6
• Mozilla Firefox ESR 24.7
• Mozilla Firefox ESR 24.8
• Mozilla Firefox ESR 24.8.1
• Mozilla Firefox ESR 31.0
• Mozilla Firefox ESR 31.1
• Mozilla Firefox ESR 31.1.0
• Mozilla Firefox ESR 31.1.1
• Mozilla Firefox ESR 31.2
• Mozilla Firefox ESR 31.3
• Mozilla Firefox ESR 31.3.0
• Mozilla Firefox ESR 31.4
• Mozilla Firefox ESR 31.5
• Mozilla Firefox ESR 31.5.2
• Mozilla Firefox ESR 31.5.3
• Mozilla Firefox ESR 31.6
• Mozilla Firefox ESR 31.7
• Mozilla Firefox ESR 31.8
• Mozilla Firefox ESR 38.1
• Mozilla Firefox ESR 38.1.1
• Mozilla Firefox ESR 38.2
• Mozilla Firefox ESR 38.2.1
• Mozilla Firefox ESR 38.3
• Mozilla Firefox ESR 38.4
• Mozilla Firefox ESR 38.5
• Mozilla Firefox ESR 38.5.1
• Mozilla Firefox ESR 38.5.2
• Mozilla Firefox ESR 38.6
• Mozilla Firefox ESR 38.6.1
• Mozilla Firefox ESR 38.7
• Mozilla Firefox ESR 38.8
• Mozilla Firefox ESR 45.1
• Mozilla Firefox ESR 45.2
• Mozilla Firefox ESR 45.3
• Mozilla Firefox ESR 45.4
• Mozilla Firefox ESR 45.5
• Mozilla Firefox ESR 45.5.1
• Mozilla Firefox ESR 45.6
• Mozilla Firefox ESR 45.7
• Mozilla Firefox ESR 45.8
• Mozilla Firefox ESR 45.9
• Mozilla Firefox ESR 52.0.1
• Mozilla Firefox ESR 52.1
• Mozilla Firefox ESR 52.1.1
• Mozilla Firefox ESR 52.2
• Mozilla Firefox ESR 52.3
• Mozilla Firefox ESR 52.4
• Mozilla Firefox ESR 52.5
• Mozilla Firefox ESR 52.5.2
• Mozilla Firefox ESR 52.6
• Mozilla Firefox ESR 52.7
• Mozilla Firefox ESR 52.7.2
• Mozilla Firefox ESR 52.7.3
• Mozilla Firefox ESR 52.8
• Mozilla Firefox ESR 52.8.1
• Mozilla Firefox ESR 52.9
• Mozilla Firefox ESR 60
• Mozilla Firefox ESR 60.0.2
• Mozilla Firefox ESR 60.1
• Mozilla Firefox ESR 60.2
• Mozilla Firefox ESR 60.2.1
• Mozilla Firefox ESR 60.2.2
• Mozilla Firefox ESR 60.3
• Mozilla Firefox ESR 60.4
• Mozilla Firefox ESR 60.5
• Mozilla Firefox ESR 60.5.1
• Mozilla Firefox ESR 60.6
• Mozilla Firefox ESR 60.6.1
• Mozilla Firefox ESR 60.7
• Mozilla Firefox ESR 60.7.1
• Mozilla Firefox ESR 60.7.2
• Mozilla Firefox ESR 60.8
• Mozilla Firefox ESR 68.0.1
• Mozilla Firefox ESR 68.0.2
• Mozilla Firefox ESR 68.1
• Mozilla Firefox ESR 68.2
• Mozilla Firefox ESR 68.3
• Mozilla Firefox ESR 68.4
• Mozilla Firefox Preview Release
• Redhat Enterprise Linux 6
• Redhat Enterprise Linux 7
• Redhat Enterprise Linux 8

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits

Implement multiple redundant layers of security.
Various memory-protection schemes (such as nonexecutable and randomly mapped memory segments) may hinder an attacker’s ability to exploit this vulnerability to execute arbitrary code.

Updates are available. Please see the references or vendor advisory for more information.