Improper input validation in sshpk - CVE-2018-3737
Published: August 8, 2018 / Updated: August 9, 2018
Vulnerability identifier: #VU14298
CSH Severity: Low
CVSS v4.0: 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:P/U:Clear
CVE-ID: CVE-2018-3737
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Joyent, Inc.
Affected software:
sshpk
sshpk
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to the use of certain regular expressions for parsing OpenSSH-format public keys. A remote attacker can create a custom public key to be parsed, trigger increases in runtime and cause the service to crash.
How to mitigate CVE-2018-3737
Update to version 1.13.2 or 1.14.1.