Vulnerability CVE-2018-18500
Published: 2019-02-05

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.

Type:

CWE-416

 (Use After Free)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Redhat -> Enterprise linux desktop 
Redhat -> Enterprise linux server 
Redhat -> Enterprise linux server aus 
Redhat -> Enterprise linux server eus 
Redhat -> Enterprise linux workstation 
Redhat -> Enterprise linux server tus 
Mozilla -> Firefox 
Mozilla -> Firefox esr 
Mozilla -> Thunderbird 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://www.securityfocus.com/bid/106781
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
https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html
https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html
https://security.gentoo.org/glsa/201903-04
https://security.gentoo.org/glsa/201904-07
https://usn.ubuntu.com/3874-1/
https://usn.ubuntu.com/3897-1/
https://www.debian.org/security/2019/dsa-4376
https://www.debian.org/security/2019/dsa-4392
https://www.mozilla.org/security/advisories/mfsa2019-01/
https://www.mozilla.org/security/advisories/mfsa2019-02/
https://www.mozilla.org/security/advisories/mfsa2019-03/
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