Vulnerability CVE-2018-18493
Published: 2019-02-28

Description:
A buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

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 server tus 
Redhat -> Enterprise linux workstation 
Mozilla -> Firefox 
Mozilla -> Firefox esr 
Mozilla -> Thunderbird 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://www.securityfocus.com/bid/106168
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
https://bugzilla.mozilla.org/show_bug.cgi?id=1504452
https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
https://security.gentoo.org/glsa/201903-04
https://usn.ubuntu.com/3844-1/
https://usn.ubuntu.com/3868-1/
https://www.debian.org/security/2018/dsa-4354
https://www.debian.org/security/2019/dsa-4362
https://www.mozilla.org/security/advisories/mfsa2018-29/
https://www.mozilla.org/security/advisories/mfsa2018-30/
https://www.mozilla.org/security/advisories/mfsa2018-31/
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