VulnerabilityModified
CVE-2018-18500
A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements.
CRITICAL 9.8EPSS 12.7%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 12.7%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 12.66% probability · 96th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird · canonical/ubuntu linux · debian/debian linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux server tus · redhat/enterprise linux workstation
- Source
- security@mozilla.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
- http://www.securityfocus.com/bid/106781Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0218Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0219Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0269Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0270Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00025.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00024.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201903-04Third Party Advisory
- https://security.gentoo.org/glsa/201904-07
- https://usn.ubuntu.com/3874-1/Third Party Advisory
- https://usn.ubuntu.com/3897-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4376Third Party Advisory
- https://www.debian.org/security/2019/dsa-4392Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-03/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
- http://www.securityfocus.com/bid/106781Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0218Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0219Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0269Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0270Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00025.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00024.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201903-04Third Party Advisory
- https://security.gentoo.org/glsa/201904-07
- https://usn.ubuntu.com/3874-1/Third Party Advisory
- https://usn.ubuntu.com/3897-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4376Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.