SB2016092617 - XXE attack in expat (Alpine package)
Published: September 26, 2016
Security Bulletin ID
SB2016092617
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) XXE attack (CVE-ID: CVE-2016-4472)
CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to the overflow protection in Expat is removed by compilers with certain optimization settings. A remote attacker can supply specially crafted XML data and cause the service to crash.
The vulnerability exists due to incomplete fix for CVE-2015-1283 and CVE-2015-2716.
Remediation
Install update from vendor's website.