| Name | CVE-2019-9813 |
| Description | Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-1727-1, DSA-4417-1 |
| NVD severity | medium (attack range: remote) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 67.0.2-1 | fixed |
| firefox-esr (PTS) | jessie | 52.8.1esr-1~deb8u1 | vulnerable |
| jessie (security) | 60.7.0esr-1~deb8u1 | fixed | |
| stretch | 60.6.1esr-1~deb9u1 | fixed | |
| stretch (security) | 60.7.0esr-1~deb9u1 | fixed | |
| buster, sid | 60.7.0esr-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| firefox | source | (unstable) | 66.0.1-1 | medium | ||
| firefox-esr | source | (unstable) | 60.6.1esr-1 | medium | ||
| firefox-esr | source | jessie | 60.6.1esr-1~deb8u1 | medium | DLA-1727-1 | |
| firefox-esr | source | stretch | 60.6.1esr-1~deb9u1 | medium | DSA-4417-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2019-09/#CVE-2019-9813
https://www.mozilla.org/en-US/security/advisories/mfsa2019-10/#CVE-2019-9813