CVE-2016-4472
The MITRE CVE dictionary describes this issue as:
The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1283 and CVE-2015-2716.
Find out more about CVE-2016-4472 from the MITRE CVE dictionary dictionary and NIST NVD.
CVSS v2 metrics
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 5.1 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat JBoss Web Server 3.0 | expat | Not affected |
| Red Hat JBoss EWS 2 | expat | Not affected |
| Red Hat JBoss EAP 6 | expat | Not affected |
| Red Hat JBoss Core Services 1 | expat | Not affected |
| Red Hat Enterprise Linux 7 | thunderbird | Will not fix |
| Red Hat Enterprise Linux 7 | expat | Will not fix |
| Red Hat Enterprise Linux 7 | firefox | Will not fix |
| Red Hat Enterprise Linux 7 | apr-util | Not affected |
| Red Hat Enterprise Linux 7 | xulrunner | Will not fix |
| Red Hat Enterprise Linux 6 | PyXML | Not affected |
| Red Hat Enterprise Linux 6 | texlive | Not affected |
| Red Hat Enterprise Linux 6 | apr-util | Not affected |
| Red Hat Enterprise Linux 6 | xulrunner | Will not fix |
| Red Hat Enterprise Linux 6 | compat-expat1 | Will not fix |
| Red Hat Enterprise Linux 6 | firefox | Will not fix |
| Red Hat Enterprise Linux 6 | thunderbird | Will not fix |
| Red Hat Enterprise Linux 6 | httpd | Not affected |
| Red Hat Enterprise Linux 6 | ghostscript | Not affected |
| Red Hat Enterprise Linux 5 | firefox | Will not fix |
| Red Hat Enterprise Linux 5 | dasher | Not affected |
| Red Hat Enterprise Linux 5 | thunderbird | Will not fix |
| Red Hat Enterprise Linux 5 | httpd | Not affected |
| Red Hat Enterprise Linux 5 | PyXML | Not affected |
| Red Hat Enterprise Linux 5 | ghostscript | Not affected |
| Red Hat Enterprise Linux 5 | expat | Will not fix |
| Red Hat Enterprise Linux 5 | xmlrpc-c | Will not fix |
| Red Hat Enterprise Linux 5 | xulrunner | Will not fix |
| Red Hat Enterprise Linux 5 | apr-util | Not affected |
| Red Hat Directory Server 8 | expat | Will not fix |
Acknowledgements
Red Hat would like to thank the Expat project for reporting this issue. Upstream acknowledges Pascal Cuoq (TrustInSoft) as the original reporter.CVE description copyright © 2017, The MITRE Corporation