Use After Free Affecting firefox package, versions <65.0+build2-0ubuntu1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2004-FIREFOX-581005
- published30 Jan 2019
- disclosed5 Feb 2019
Introduced: 30 Jan 2019
CVE-2018-18500 (opens in a new tab)How to fix?
Upgrade Ubuntu:20.04 firefox to version 65.0+build2-0ubuntu1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-18500
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18500
- https://www.debian.org/security/2019/dsa-4376
- https://www.debian.org/security/2019/dsa-4392
- https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html
- https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html
- https://security-tracker.debian.org/tracker/CVE-2018-18500
- https://security.gentoo.org/glsa/201903-04
- https://security.gentoo.org/glsa/201904-07
- https://www.mozilla.org/security/advisories/mfsa2019-01/
- https://www.mozilla.org/security/advisories/mfsa2019-02/
- https://www.mozilla.org/security/advisories/mfsa2019-03/
- https://access.redhat.com/errata/RHSA-2019:0218
- https://access.redhat.com/errata/RHSA-2019:0219
- https://access.redhat.com/errata/RHSA-2019:0269
- https://access.redhat.com/errata/RHSA-2019:0270
- http://www.securityfocus.com/bid/106781
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
- https://usn.ubuntu.com/3874-1/
- https://usn.ubuntu.com/3897-1/
- https://github.com/sophoslabs/CVE-2018-18500