SB2018120804 - Denial of service in uriparser
Published: December 8, 2018
Security Bulletin ID
SB2018120804
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 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2018-20721)
The vulnerability allows a remote attacker to gain access to cause DoS condition.
The vulnerability exists in URI_FUNC() in UriParse.c in uriparser due to a boundary condition. A remote attacker can create a specially crafted Excel file, trick the victim into opening it, trigger out-of-bounds read error for an incomplete URI with an IPv6 address containing an embedded IPv4 address, such as a "//[::44.1" address and cause the service to crash.
Remediation
Install update from vendor's website.