SB2018032935 - Fedora EPEL 7 update for libuv, nodejs

Description

This security bulletin contains information about 3 vulnerabilities.

1) Resource exhaustion (CVE-ID: CVE-2018-7158)

CWE-ID: CWE-400 - Resource exhaustion

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:Green

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the splitPathRe regular expression used in the core Node.js path module for POSIX path parsing functions due to resource exhaustion. A remote attacker can cause the service to crash by taking a non-trivial amount of time to parse the value against the RegEx.

2) HTTP response splitting (CVE-ID: CVE-2018-7159)

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to write arbitrary files on the target system.

The weakness exists due to spaces in Content-Length HTTP headers from Node.js’s HTTP module entirely ignore spaces within the value, despite the HTTP specification not allowing spaces within the values. A remote attacker can confuse the script and write arbitrary files.

3) Improper input validation (CVE-ID: CVE-2018-7160)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to improper validation of the Host header, leaving the inspector vulnerable to a DNS rebind attack and bypass same-origin policy. A remote attacker can trick the victim into opening a specially crafted website and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Remediation

Install update from vendor's website.

References

• https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2018-e12bc7bed5