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 (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid69.0-1fixed
firefox-esr (PTS)jessie52.8.1esr-1~deb8u1fixed
jessie (security)60.9.0esr-1~deb8u1fixed
stretch60.7.1esr-1~deb9u1fixed
stretch (security)60.9.0esr-1~deb9u1fixed
buster60.8.0esr-1~deb10u1fixed
buster (security)60.9.0esr-1~deb10u1fixed
bullseye60.8.0esr-1fixed
sid68.1.0esr-1fixed
thunderbird (PTS)jessie1:52.8.0-1~deb8u1fixed
jessie (security)1:60.9.0-1~deb8u1fixed
stretch1:60.8.0-1~deb9u1fixed
stretch (security)1:60.9.0-1~deb9u1fixed
buster1:60.8.0-1~deb10u1fixed
buster (security)1:60.9.0-1~deb10u1fixed
bullseye, sid1:60.9.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)56.0-1medium
firefox-esrsource(unstable)52.4.0esr-2medium
firefox-esrsourcejessie52.4.0esr-1~deb8u1mediumDSA-3987-1
firefox-esrsourcestretch52.4.0esr-1~deb9u1mediumDSA-3987-1
firefox-esrsourcewheezy52.4.0esr-2~deb7u1mediumDLA-1118-1
thunderbirdsource(unstable)1:52.4.0-1medium
thunderbirdsourcejessie1:52.4.0-1~deb8u1mediumDSA-4014-1
thunderbirdsourcestretch1:52.4.0-1~deb9u1mediumDSA-4014-1
thunderbirdsourcewheezy1:52.4.0-1~deb7u1mediumDLA-1153-1

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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