CVE-2017-7814

NameCVE-2017-7814
DescriptionFile downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1118-1, DLA-1153-1, DSA-3987-1, DSA-4014-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid92.0-1fixed
firefox-esr (PTS)stretch68.10.0esr-1~deb9u1fixed
stretch (security)78.14.0esr-1~deb9u1fixed
buster78.11.0esr-1~deb10u1fixed
buster (security)78.14.0esr-1~deb10u1fixed
bullseye78.12.0esr-1fixed
bullseye (security)78.14.0esr-1~deb11u1fixed
bookworm, sid78.14.0esr-1fixed
thunderbird (PTS)stretch1:68.10.0-1~deb9u1fixed
stretch (security)1:78.14.0-1~deb9u1fixed
buster1:78.6.0-1~deb10u1fixed
buster (security)1:78.14.0-1~deb10u1fixed
bullseye1:78.12.0-1fixed
bullseye (security)1:78.14.0-1~deb11u1fixed
bookworm, sid1:78.14.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)56.0-1
firefox-esrsourcewheezy52.4.0esr-2~deb7u1DLA-1118-1
firefox-esrsourcejessie52.4.0esr-1~deb8u1DSA-3987-1
firefox-esrsourcestretch52.4.0esr-1~deb9u1DSA-3987-1
firefox-esrsource(unstable)52.4.0esr-2
thunderbirdsourcewheezy1:52.4.0-1~deb7u1DLA-1153-1
thunderbirdsourcejessie1:52.4.0-1~deb8u1DSA-4014-1
thunderbirdsourcestretch1:52.4.0-1~deb9u1DSA-4014-1
thunderbirdsource(unstable)1:52.4.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/#CVE-2017-7814
https://www.mozilla.org/en-US/security/advisories/mfsa2017-22/#CVE-2017-7814
https://www.mozilla.org/en-US/security/advisories/mfsa2017-23/#CVE-2017-7814

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