CVE-2016-2821

NameCVE-2016-2821
DescriptionUse-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-521-1, DSA-3600-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid57.0.1-1fixed
firefox-esr (PTS)wheezy (security)52.5.2esr-1~deb7u1fixed
jessie52.5.0esr-1~deb8u1fixed
jessie (security)52.5.2esr-1~deb8u1fixed
stretch52.5.0esr-1~deb9u1fixed
stretch (security)52.5.2esr-1~deb9u1fixed
buster52.5.0esr-1fixed
sid52.5.2esr-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)47.0-1medium
firefox-esrsource(unstable)45.2.0esr-1medium
firefox-esrsourcejessie45.2.0esr-1~deb8u1mediumDSA-3600-1
firefox-esrsourcewheezy45.2.0esr-1~deb7u1mediumDLA-521-1

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