CVE-2018-5091: Use After Free
A use-after-free vulnerability can occur during WebRTC connections when interacting with the DTMF timers. This results in a potentially exploitable crash.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/firefoxto a version that resolves this vulnerability.Fixed in 131.0.2-2 - Upgrade
Upgrade
debian/firefox-esrto a version that resolves this vulnerability.Fixed in 115.14.0esr-1~deb11u1Fixed in 128.3.1esr-1~deb11u1Fixed in 115.14.0esr-1~deb12u1Fixed in 128.3.1esr-1~deb12u1Fixed in 128.3.0esr-2Fixed in 128.3.1esr-2 - Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 58 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 52.6 - Upgrade
Upgrade
alpine/firefox-esrto a version that resolves this vulnerability.Fixed in 52.6.0-r0
Event History
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
- CVE-2018-5096
Frequently Asked Questions
What is CVE-2018-5091?
CVE-2018-5091 is a use-after-free vulnerability that can occur during WebRTC connections when interacting with the DTMF timers, resulting in a potentially exploitable crash.
Which software versions are affected by CVE-2018-5091?
Firefox ESR versions below 52.6 and Firefox versions below 58 are affected by CVE-2018-5091.
What is the severity of CVE-2018-5091?
CVE-2018-5091 has a severity rating of critical.
What is the remedy for CVE-2018-5091?
To fix CVE-2018-5091, update Firefox to version 58.0 or later.
Where can I find more information about CVE-2018-5091?
You can find more information about CVE-2018-5091 on the following references: [Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1423086), [Mozilla Security Advisory](https://www.mozilla.org/en-US/security/advisories/mfsa2018-02/), [CVE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5091).