First published: Wed Feb 25 2015(Updated: )
Multiple untrusted search path vulnerabilities in updater.exe in Mozilla Firefox before 36.0, Firefox ESR 31.x before 31.5, and Thunderbird before 31.5 on Windows, when the Maintenance Service is not used, allow local users to gain privileges via a Trojan horse DLL in (1) the current working directory or (2) a temporary directory, as demonstrated by bcrypt.dll.
Credit: security@mozilla.org security@mozilla.org
Affected Software | Affected Version | How to fix |
---|---|---|
openSUSE Evergreen | =11.4 | |
openSUSE | =13.1 | |
openSUSE | =13.2 | |
Mozilla Firefox | <=35.0.1 | |
Mozilla Firefox | =0.1 | |
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 | |
Mozilla Firefox | =0.9 | |
Mozilla Firefox | =0.9-rc | |
Mozilla Firefox | =0.9.1 | |
Mozilla Firefox | =0.9.2 | |
Mozilla Firefox | =0.9.3 | |
Mozilla Firefox | =0.10 | |
Mozilla Firefox | =0.10.1 | |
Mozilla Firefox | =1.0 | |
Mozilla Firefox | =1.0-preview_release | |
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 | |
Mozilla Firefox | =1.5-beta1 | |
Mozilla Firefox | =1.5-beta2 | |
Mozilla Firefox | =1.5.0.1 | |
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 | =1.5.0.10 | |
Mozilla Firefox | =1.5.0.11 | |
Mozilla Firefox | =1.5.0.12 | |
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 | =2.0 | |
Mozilla Firefox | =2.0.0.1 | |
Mozilla Firefox | =2.0.0.2 | |
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 | =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 | =2.0.0.20 | |
Mozilla Firefox | =3.0 | |
Mozilla Firefox | =3.0.1 | |
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 | =3.0.8 | |
Mozilla Firefox | =3.0.9 | |
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 | =3.5 | |
Mozilla Firefox | =3.5.1 | |
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 | =3.5.10 | |
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 | =3.6 | |
Mozilla Firefox | =3.6.2 | |
Mozilla Firefox | =3.6.3 | |
Mozilla Firefox | =3.6.4 | |
Mozilla Firefox | =3.6.6 | |
Mozilla Firefox | =3.6.7 | |
Mozilla Firefox | =3.6.8 | |
Mozilla Firefox | =3.6.9 | |
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 | =3.6.20 | |
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 | =4.0 | |
Mozilla Firefox | =4.0-beta1 | |
Mozilla Firefox | =4.0-beta10 | |
Mozilla Firefox | =4.0-beta11 | |
Mozilla Firefox | =4.0-beta12 | |
Mozilla Firefox | =4.0-beta2 | |
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 | =5.0 | |
Mozilla Firefox | =5.0.1 | |
Mozilla Firefox | =6.0 | |
Mozilla Firefox | =6.0.1 | |
Mozilla Firefox | =6.0.2 | |
Mozilla Firefox | =7.0 | |
Mozilla Firefox | =7.0.1 | |
Mozilla Firefox | =8.0 | |
Mozilla Firefox | =8.0.1 | |
Mozilla Firefox | =9.0 | |
Mozilla Firefox | =9.0.1 | |
Mozilla Firefox | =10.0 | |
Mozilla Firefox | =10.0.1 | |
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 | =10.0.10 | |
Mozilla Firefox | =10.0.11 | |
Mozilla Firefox | =10.0.12 | |
Mozilla Firefox | =11.0 | |
Mozilla Firefox | =12.0 | |
Mozilla Firefox | =12.0-beta6 | |
Mozilla Firefox | =13.0 | |
Mozilla Firefox | =13.0.1 | |
Mozilla Firefox | =14.0 | |
Mozilla Firefox | =14.0.1 | |
Mozilla Firefox | =15.0 | |
Mozilla Firefox | =15.0.1 | |
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 | =17.0.2 | |
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 | =17.0.10 | |
Mozilla Firefox | =17.0.11 | |
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 | =20.0 | |
Mozilla Firefox | =20.0.1 | |
Mozilla Firefox | =21.0 | |
Mozilla Firefox | =22.0 | |
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 | =26.0 | |
Mozilla Firefox | =27.0 | |
Mozilla Firefox | =27.0.1 | |
Mozilla Firefox | =28.0 | |
Mozilla Firefox | =29.0 | |
Mozilla Firefox | =29.0.1 | |
Mozilla Firefox | =30.0 | |
Mozilla Firefox | =31.0 | |
Mozilla Firefox | =31.1.0 | |
Mozilla Firefox | =32.0 | |
Mozilla Firefox | =33.0 | |
Mozilla Firefox | =34.0.5 | |
Microsoft Windows | ||
Mozilla Thunderbird | <=31.4 | |
Mozilla Thunderbird | =31.0 | |
Mozilla Thunderbird | =31.1.2 | |
Mozilla Thunderbird | =31.2 | |
Mozilla Thunderbird | =31.3 | |
Mozilla Firefox ESR | =31.0 | |
Mozilla Firefox ESR | =31.1 | |
Mozilla Firefox ESR | =31.1.1 | |
Mozilla Firefox ESR | =31.2 | |
Mozilla Firefox ESR | =31.3 | |
Mozilla Firefox ESR | =31.4 | |
Mozilla Firefox ESR | =31.5 | |
All of | ||
Any of | ||
Mozilla Firefox | <=35.0.1 | |
Mozilla Firefox | =0.1 | |
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 | |
Mozilla Firefox | =0.9 | |
Mozilla Firefox | =0.9-rc | |
Mozilla Firefox | =0.9.1 | |
Mozilla Firefox | =0.9.2 | |
Mozilla Firefox | =0.9.3 | |
Mozilla Firefox | =0.10 | |
Mozilla Firefox | =0.10.1 | |
Mozilla Firefox | =1.0 | |
Mozilla Firefox | =1.0-preview_release | |
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 | |
Mozilla Firefox | =1.5-beta1 | |
Mozilla Firefox | =1.5-beta2 | |
Mozilla Firefox | =1.5.0.1 | |
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 | =1.5.0.10 | |
Mozilla Firefox | =1.5.0.11 | |
Mozilla Firefox | =1.5.0.12 | |
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 | =2.0 | |
Mozilla Firefox | =2.0.0.1 | |
Mozilla Firefox | =2.0.0.2 | |
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 | =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 | =2.0.0.20 | |
Mozilla Firefox | =3.0 | |
Mozilla Firefox | =3.0.1 | |
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 | =3.0.8 | |
Mozilla Firefox | =3.0.9 | |
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 | =3.5 | |
Mozilla Firefox | =3.5.1 | |
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 | =3.5.10 | |
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 | =3.6 | |
Mozilla Firefox | =3.6.2 | |
Mozilla Firefox | =3.6.3 | |
Mozilla Firefox | =3.6.4 | |
Mozilla Firefox | =3.6.6 | |
Mozilla Firefox | =3.6.7 | |
Mozilla Firefox | =3.6.8 | |
Mozilla Firefox | =3.6.9 | |
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 | =3.6.20 | |
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 | =4.0 | |
Mozilla Firefox | =4.0-beta1 | |
Mozilla Firefox | =4.0-beta10 | |
Mozilla Firefox | =4.0-beta11 | |
Mozilla Firefox | =4.0-beta12 | |
Mozilla Firefox | =4.0-beta2 | |
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 | =5.0 | |
Mozilla Firefox | =5.0.1 | |
Mozilla Firefox | =6.0 | |
Mozilla Firefox | =6.0.1 | |
Mozilla Firefox | =6.0.2 | |
Mozilla Firefox | =7.0 | |
Mozilla Firefox | =7.0.1 | |
Mozilla Firefox | =8.0 | |
Mozilla Firefox | =8.0.1 | |
Mozilla Firefox | =9.0 | |
Mozilla Firefox | =9.0.1 | |
Mozilla Firefox | =10.0 | |
Mozilla Firefox | =10.0.1 | |
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 | =10.0.10 | |
Mozilla Firefox | =10.0.11 | |
Mozilla Firefox | =10.0.12 | |
Mozilla Firefox | =11.0 | |
Mozilla Firefox | =12.0 | |
Mozilla Firefox | =12.0-beta6 | |
Mozilla Firefox | =13.0 | |
Mozilla Firefox | =13.0.1 | |
Mozilla Firefox | =14.0 | |
Mozilla Firefox | =14.0.1 | |
Mozilla Firefox | =15.0 | |
Mozilla Firefox | =15.0.1 | |
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 | =17.0.2 | |
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 | =17.0.10 | |
Mozilla Firefox | =17.0.11 | |
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 | =20.0 | |
Mozilla Firefox | =20.0.1 | |
Mozilla Firefox | =21.0 | |
Mozilla Firefox | =22.0 | |
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 | =26.0 | |
Mozilla Firefox | =27.0 | |
Mozilla Firefox | =27.0.1 | |
Mozilla Firefox | =28.0 | |
Mozilla Firefox | =29.0 | |
Mozilla Firefox | =29.0.1 | |
Mozilla Firefox | =30.0 | |
Mozilla Firefox | =31.0 | |
Mozilla Firefox | =31.1.0 | |
Mozilla Firefox | =32.0 | |
Mozilla Firefox | =33.0 | |
Mozilla Firefox | =34.0.5 | |
Microsoft Windows | ||
All of | ||
Any of | ||
Mozilla Thunderbird | <=31.4 | |
Mozilla Thunderbird | =31.0 | |
Mozilla Thunderbird | =31.1.2 | |
Mozilla Thunderbird | =31.2 | |
Mozilla Thunderbird | =31.3 | |
Microsoft Windows | ||
All of | ||
Any of | ||
Mozilla Firefox | =31.0 | |
Mozilla Firefox | =31.1.1 | |
Mozilla Firefox ESR | =31.1 | |
Mozilla Firefox ESR | =31.2 | |
Mozilla Firefox ESR | =31.3 | |
Mozilla Firefox ESR | =31.4 | |
Mozilla Firefox ESR | =31.5 | |
Microsoft Windows |
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CVE-2015-0833 is classified as a medium severity vulnerability due to its ability to allow local users to gain elevated privileges through a specific exploit.
To fix CVE-2015-0833, upgrade to the latest version of Mozilla Firefox or Mozilla Thunderbird that addresses this vulnerability.
CVE-2015-0833 affects Mozilla Firefox versions prior to 36.0, Firefox ESR versions before 31.5, and Thunderbird versions before 31.5 on Windows.
In the context of CVE-2015-0833, a Trojan horse DLL is a malicious dynamic link library that could be placed in untrusted directories to exploit the vulnerability.
No, local users must have physical or direct access to the affected system to exploit CVE-2015-0833.