SB2018031220 - Improper Certificate Validation in curl.haxx.se cURL
Published: March 12, 2018 Updated: July 28, 2020
Security Bulletin ID
SB2018031220
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Certificate Validation (CVE-ID: CVE-2016-9952)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."
Remediation
Install update from vendor's website.