Packages
- firefox - Mozilla Open Source web browser
Details
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, read uninitialized
memory, obtain sensitive information, bypass same-origin restrictions,
bypass CSP protections, bypass mixed content blocking, spoof the
addressbar, or execute arbitrary code. (CVE-2017-7826, CVE-2017-7827,
CVE-2017-7828, CVE-2017-7830, CVE-2017-7831, CVE-2017-7832, CVE-2017-7833,
CVE-2017-7834, CVE-2017-7835, CVE-2017-7837,
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, read uninitialized
memory, obtain sensitive information, bypass same-origin restrictions,
bypass CSP protections, bypass mixed content blocking, spoof the
addressbar, or execute arbitrary code. (CVE-2017-7826, CVE-2017-7827,
CVE-2017-7828, CVE-2017-7830, CVE-2017-7831, CVE-2017-7832, CVE-2017-7833,
CVE-2017-7834, CVE-2017-7835, CVE-2017-7837, CVE-2017-7838, CVE-2017-7842)
It was discovered that javascript: URLs pasted in to the addressbar
would be executed instead of being blocked in some circumstances. If a
user were tricked in to copying a specially crafted URL in to the
addressbar, an attacker could potentially exploit this to conduct
cross-site scripting (XSS) attacks. (CVE-2017-7839)
It was discovered that exported bookmarks do not strip script elements
from user-supplied tags. If a user were tricked in to adding specially
crafted tags to bookmarks, exporting them and then opening the resulting
HTML file, an attacker could potentially exploit this to conduct
cross-site scripting (XSS) attacks. (CVE-2017-7840)
Update instructions
After a standard system update you need to restart Firefox to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 17.10 artful | firefox – 57.0+build4-0ubuntu0.17.10.5 | ||
| 17.04 zesty | firefox – 57.0+build4-0ubuntu0.17.04.5 | ||
| 16.04 xenial | firefox – 57.0+build4-0ubuntu0.16.04.5 | ||
| 14.04 trusty | firefox – 57.0+build4-0ubuntu0.14.04.4 | ||
Reduce your security exposure
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References
- CVE-2017-7842
- CVE-2017-7840
- CVE-2017-7839
- CVE-2017-7838
- CVE-2017-7837
- CVE-2017-7835
- CVE-2017-7834
- CVE-2017-7833
- CVE-2017-7832
- CVE-2017-7831
- CVE-2017-7842
- CVE-2017-7840
- CVE-2017-7839
- CVE-2017-7838
- CVE-2017-7837
- CVE-2017-7835
- CVE-2017-7834
- CVE-2017-7833
- CVE-2017-7832
- CVE-2017-7831
- CVE-2017-7830
- CVE-2017-7828
- CVE-2017-7827
- CVE-2017-7826