CVE-2019-11730

NameCVE-2019-11730
DescriptionA vulnerability exists where if a user opens a locally saved HTML file, this file can use file: URIs to access other files in the same directory or sub-directories if the names are known or guessed. The Fetch API can then be used to read the contents of any files stored in these directories and they may uploaded to a server. It was demonstrated that in combination with a popular Android messaging app, if a malicious HTML attachment is sent to a user and they opened that attachment in Firefox, due to that app's predictable pattern for locally-saved file names, it is possible to read attachments the victim received from other correspondents. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
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-1869-1, DLA-1870-1, DSA-4479-1, DSA-4482-1
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~deb8u1vulnerable
jessie (security)60.9.0esr-1~deb8u1fixed
stretch60.7.1esr-1~deb9u1vulnerable
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~deb8u1vulnerable
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)68.0-1medium
firefox-esrsource(unstable)60.8.0esr-1medium
firefox-esrsourcebuster60.8.0esr-1~deb10u1mediumDSA-4479-1
firefox-esrsourcejessie60.8.0esr-1~deb8u1mediumDLA-1869-1
firefox-esrsourcestretch60.8.0esr-1~deb9u1mediumDSA-4479-1
thunderbirdsource(unstable)1:60.8.0-1medium
thunderbirdsourcebuster1:60.8.0-1~deb10u1mediumDSA-4482-1
thunderbirdsourcejessie1:60.8.0-1~deb8u1mediumDLA-1870-1
thunderbirdsourcestretch1:60.8.0-1~deb9u1mediumDSA-4482-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2019-21/#CVE-2019-11730
https://www.mozilla.org/en-US/security/advisories/mfsa2019-22/#CVE-2019-11730
https://www.mozilla.org/en-US/security/advisories/mfsa2019-23/#CVE-2019-11730

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