SB2017103012 - Denial of service in RubyGems Optimized XML
Published: October 30, 2017 Updated: March 19, 2018
Security Bulletin ID
SB2017103012
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Stack-based buffer over-read (CVE-ID: CVE-2017-16229)
CWE-ID: CWE-126 - Buffer over-read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the read_from_str function due to stack-based buffer overread. A local attacker can send specially crafted input to be parsed by the sax_parse function, trigger memory corruption and cause the service to crash.
Remediation
Install update from vendor's website.