CVE-2017-7813: Incorrect Type Cast
First published: Thu Sep 28 2017(Updated: )
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.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Firefox | <56 | 56 |
| Mozilla Firefox | <=55.0.3 | |
| debian/firefox | 131.0-1 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1383951
- https://www.mozilla.org/security/advisories/mfsa2017-21/
- http://www.securityfocus.com/bid/101057
- http://www.securitytracker.com/id/1039465
- https://launchpad.net/bugs/cve/CVE-2017-7813
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/#CVE-2017-7822
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/#CVE-2017-7813
- https://security-tracker.debian.org/tracker/CVE-2017-7813
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7813
- https://nvd.nist.gov/vuln/detail/CVE-2017-7813
- https://ubuntu.com/security/CVE-2017-7813
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2017-7813?
CVE-2017-7813 is a vulnerability in the JavaScript parser of Mozilla Firefox and Ubuntu Firefox that can result in data leakage from memory.
What is the severity of CVE-2017-7813?
CVE-2017-7813 has a severity rating of 8.2, which is considered high.
Which software is affected by CVE-2017-7813?
Mozilla Firefox versions up to and exclusive of 56.0.3, as well as Ubuntu Firefox versions 56.0+ on various Ubuntu releases, are affected by CVE-2017-7813.
How can CVE-2017-7813 be fixed?
To fix CVE-2017-7813, users should update their Mozilla Firefox or Ubuntu Firefox to version 56.0 or newer.
Where can I find more information about CVE-2017-7813?
More information about CVE-2017-7813 can be found in the following references: [1] [2] [3]
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/severity
- agent/weakness
- collector/mozilla-advisory
- agent/software-canonical-lookup-request
- source/Mozilla
- agent/software-canonical-lookup
- collector/nvd-cve
- source/NVD
- collector/nvd-index
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/tags
- agent/description
- agent/event
- agent/softwarecombine
- collector/security-tracker-debian
- source/Debian
- agent/trending
- vendor/mozilla
- canonical/mozilla firefox
- version/mozilla firefox/55.0.3
- package-manager/debian