Use After Free Affecting firefox-esr package, versions <60.4.0esr-1
Threat Intelligence
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-DEBIAN14-FIREFOXESR-11742462
- published10 Aug 2025
- disclosed28 Feb 2019
Introduced: 28 Feb 2019
CVE-2018-18492 (opens in a new tab)How to fix?
Upgrade Debian:14 firefox-esr to version 60.4.0esr-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian.
See How to fix? for Debian:14 relevant fixed versions and status.
A use-after-free vulnerability can occur after deleting a selection element due to a weak reference to the select element in the options collection. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
References
- https://security-tracker.debian.org/tracker/CVE-2018-18492
- https://www.debian.org/security/2018/dsa-4354
- https://www.debian.org/security/2019/dsa-4362
- https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
- https://security.gentoo.org/glsa/201903-04
- https://www.mozilla.org/security/advisories/mfsa2018-29/
- https://www.mozilla.org/security/advisories/mfsa2018-30/
- https://www.mozilla.org/security/advisories/mfsa2018-31/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1499861
- https://access.redhat.com/errata/RHSA-2018:3831
- https://access.redhat.com/errata/RHSA-2018:3833
- https://access.redhat.com/errata/RHSA-2019:0159
- https://access.redhat.com/errata/RHSA-2019:0160
- http://www.securityfocus.com/bid/106168
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-18492
- https://usn.ubuntu.com/3844-1/
- https://usn.ubuntu.com/3868-1/