Information disclosure in Mesos - CVE-2018-8023
Published: September 21, 2018 / Updated: July 17, 2020
Vulnerability identifier: #VU31202
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-8023
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
Apache Mesos can be configured to require authentication to call the Executor HTTP API using JSON Web Token (JWT). In Apache Mesos versions pre-1.4.2, 1.5.0, 1.5.1, 1.6.0 the comparison of the generated HMAC value against the provided signature in the JWT implementation used is vulnerable to a timing attack because instead of a constant-time string comparison routine a standard `==` operator has been used. A malicious actor can therefore abuse the timing difference of when the JWT validation function returns to reveal the correct HMAC value.
Affected software
Mesos
Netcool Operations Insight
IBM Cloud Pak for Watson AIOps
Netcool Operations Insight
IBM Cloud Pak for Watson AIOps
How to mitigate CVE-2018-8023
Install update from vendor's website.
Mesos - update to 1.4.2
Netcool Operations Insight - update to 1.6.8
IBM Cloud Pak for Watson AIOps - update to 3.6.0
Netcool Operations Insight - update to 1.6.8
IBM Cloud Pak for Watson AIOps - update to 3.6.0