CVE-2018-5101: Use After Free
First published: Tue Jan 23 2018(Updated: )
A use-after-free vulnerability can occur when manipulating floating "first-letter" style elements, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 58.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Firefox | <58 | 58 |
| Mozilla Firefox | <=57.0.4 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =17.10 | |
| debian/firefox | 131.0.2-2 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1417661
- https://www.mozilla.org/security/advisories/mfsa2018-02/
- https://usn.ubuntu.com/3544-1/
- http://www.securityfocus.com/bid/102786
- http://www.securitytracker.com/id/1040270
- https://launchpad.net/bugs/cve/CVE-2018-5101
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-02/
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-02/#CVE-2018-5107
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-02/#CVE-2018-5101
- https://security-tracker.debian.org/tracker/CVE-2018-5101
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5101
- https://nvd.nist.gov/vuln/detail/CVE-2018-5101
- https://ubuntu.com/security/CVE-2018-5101
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2018-5091
- CVE-2018-5092
- CVE-2018-5093
- CVE-2018-5094
- CVE-2018-5095
- CVE-2018-5097
- CVE-2018-5098
- CVE-2018-5099
- CVE-2018-5100
- CVE-2018-5101
- CVE-2018-5102
- CVE-2018-5103
- CVE-2018-5104
- CVE-2018-5105
- CVE-2018-5106
- CVE-2018-5107
- CVE-2018-5108
- CVE-2018-5109
- CVE-2018-5110
- CVE-2018-5111
- CVE-2018-5112
- CVE-2018-5113
- CVE-2018-5114
- CVE-2018-5115
- CVE-2018-5116
- CVE-2018-5117
- CVE-2018-5118
- CVE-2018-5119
- CVE-2018-5121
- CVE-2018-5122
- CVE-2018-5090
- CVE-2018-5089
Frequently Asked Questions
What is CVE-2018-5101?
CVE-2018-5101 is a use-after-free vulnerability that can occur when manipulating floating "first-letter" style elements, resulting in a potentially exploitable crash.
Which software is affected by CVE-2018-5101?
Firefox versions prior to 58 are affected by CVE-2018-5101.
What is the severity of CVE-2018-5101?
CVE-2018-5101 has a severity level of high (7).
How can I fix CVE-2018-5101?
To fix CVE-2018-5101, update your Mozilla Firefox browser to version 58 or later.
Where can I find more information about CVE-2018-5101?
You can find more information about CVE-2018-5101 on the Mozilla security advisory page: https://www.mozilla.org/security/advisories/mfsa2018-02/
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