CVE-2016-9063: An integer overflow during the parsing of XML using the Expat library

Critical severity · published Jun 11, 2018

CVE-2016-9063

An integer overflow during the parsing of XML using the Expat library

9.8

CVSS

5.4%

EPSS

On KEV

Description

An integer overflow during the parsing of XML using the Expat library. This vulnerability affects Firefox < 50.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)5.4% · higher than 93% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Firefox · Mozilla

before 50 · source: vendor, NVD

Debian Linux · Debian

8.0; 9.0; 10.0 · source: NVD

Python · Python

2.7.0 before 2.7.15; 3.3.0 before 3.3.7; 3.4.0 before 3.4.7; 3.5.0 before 3.5.4; 3.6.0 before 3.6.2 · source: NVD

Affected product

Firefox

Mozilla

All Firefox CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2016-9063

CVE.org

https://www.cve.org/CVERecord?id=CVE-2016-9063

Third Party Advisory

http://www.securityfocus.com/bid/94337

Third Party Advisory

http://www.securitytracker.com/id/1037298

Third Party Advisory

http://www.securitytracker.com/id/1039427

Issue Tracking

https://bugzilla.mozilla.org/show_bug.cgi?id=1274777

Third Party Advisory

https://www.debian.org/security/2017/dsa-3898

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2016-89/