SB2018012508 - Multiple vulnerabilities in libcurl
Published: January 25, 2018
Security Bulletin ID
SB2018012508
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2018-1000005)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition on the target system.
The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted HTTP/2 trailer to trigger an out-of-bounds memory read error and cause the application to crash or obtain potentially sensitive information from services that echo back or otherwise use the trailers.
2) Information disclosure (CVE-ID: CVE-2018-1000007)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send custom headers in an HTTP request and an HTTP 30X redirect response code, cause the application to send the custom headers to the server specified in the 'Location:' response header and obtain potentially sensitive authentication information from applications that use custom 'Authorization:' headers.
Remediation
Install update from vendor's website.