Security readout for executives and security teams
This is a memory safety bug in Mozilla Firefox, Firefox ESR, and Thunderbird. A crafted page or message that manipulates an HTML selection element could trigger a use-after-free crash. Mozilla described it as potentially exploitable. The sources do not provide CVSS or confirm active exploitation. Exposure is mainly endpoints running outdated Mozilla clients: Firefox before 64, Firefox ESR before 60.4, or Thunderbird before 60.4. Linux distribution packages are relevant because Debian, Ubuntu, Red Hat, and Gentoo advisories are listed. Current managed browsers are unlikely to be exposed if patched normally. Prioritize remediation for any legacy endpoints still running vulnerable Mozilla clients, especially systems used for web browsing or email. There is no sourced evidence of active exploitation, but a potentially exploitable memory corruption bug in common client software warrants timely cleanup. Mitigation focus: Upgrade Firefox to version 64 or later.; Upgrade Firefox ESR to version 60.4 or later.; Upgrade Thunderbird to version 60.4 or later..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2018-18492 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mozilla.org/security/advisories/mfsa2018-29/CVE reference · x_refsource_CONFIRM
- https://bugzilla.mozilla.org/show_bug.cgi?id=1499861CVE reference · x_refsource_CONFIRM
- [debian-lts-announce] 20181213 [SECURITY] [DLA 1605-1] firefox-esr security updateCVE reference · mailing-list, x_refsource_MLIST
- RHSA-2018:3833CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2018:3831CVE reference · vendor-advisory, x_refsource_REDHAT
- DSA-4362CVE reference · vendor-advisory, x_refsource_DEBIAN
- GLSA-201903-04CVE reference · vendor-advisory, x_refsource_GENTOO
- USN-3844-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- RHSA-2019:0159CVE reference · vendor-advisory, x_refsource_REDHAT
- https://www.mozilla.org/security/advisories/mfsa2018-31/CVE reference · x_refsource_CONFIRM
- https://www.mozilla.org/security/advisories/mfsa2018-30/CVE reference · x_refsource_CONFIRM
- DSA-4354CVE reference · vendor-advisory, x_refsource_DEBIAN
- USN-3868-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- RHSA-2019:0160CVE reference · vendor-advisory, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.