CVE-2017-7813
Published: 2 October 2017
Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
artful |
Released
(56.0+build6-0ubuntu1)
|
| bionic |
Released
(56.0+build6-0ubuntu1)
|
|
| cosmic |
Released
(56.0+build6-0ubuntu1)
|
|
| disco |
Released
(56.0+build6-0ubuntu1)
|
|
| eoan |
Released
(56.0+build6-0ubuntu1)
|
|
| groovy |
Released
(56.0+build6-0ubuntu1)
|
|
| jammy |
Released
(56.0+build6-0ubuntu1)
|
|
| kinetic |
Released
(56.0+build6-0ubuntu1)
|
|
| lunar |
Released
(56.0+build6-0ubuntu1)
|
|
| trusty |
Released
(56.0+build6-0ubuntu0.14.04.1)
|
|
| focal |
Released
(56.0+build6-0ubuntu1)
|
|
| hirsute |
Released
(56.0+build6-0ubuntu1)
|
|
| impish |
Released
(56.0+build6-0ubuntu1)
|
|
| upstream |
Released
(56.0)
|
|
| xenial |
Released
(56.0+build6-0ubuntu0.16.04.1)
|
|
| zesty |
Released
(56.0+build6-0ubuntu0.17.04.1)
|
|
| mantic |
Released
(56.0+build6-0ubuntu1)
|
|
|
mozjs38 Launchpad, Ubuntu, Debian |
groovy |
Does not exist
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| artful |
Ignored
(end of life)
|
|
| bionic |
Needs triage
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| zesty |
Ignored
(end of life)
|
|
| mantic |
Does not exist
|
|
|
mozjs52 Launchpad, Ubuntu, Debian |
groovy |
Not vulnerable
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| artful |
Not vulnerable
|
|
| bionic |
Not vulnerable
|
|
| cosmic |
Not vulnerable
|
|
| disco |
Not vulnerable
|
|
| eoan |
Not vulnerable
|
|
| focal |
Not vulnerable
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Not vulnerable
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
| mantic |
Does not exist
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.2 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |