Icinga 2: Stack overflow via deeply nested JSON objects
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.5%
exploitation probability
0.5%top 57% of all CVEs
observed exploitation
nono source reports it
Icinga 2 is an open source monitoring system. Prior to 2.14.9, 2.15.4, and 2.16.2, parsing deeply nested JSON can exhaust the call stack because nesting depth is not bounded. The affected JSON parsing paths are reachable by unauthenticated network clients through the Icinga 2 service on TCP port 5665, allowing a remote attacker to crash the process, while possible code execution has not been demonstrated. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Affected products
Icinga · icinga2References
https://github.com/Icinga/icinga2/commit/391504eaa9ed9aee81f84008c57ec821974b74eehttps://github.com/Icinga/icinga2/commit/3d9166ff52ff1a64a286c39af57957d63442c137https://github.com/Icinga/icinga2/commit/4964d2444ca5c4fae9036054554e1c6e0025fb89https://github.com/Icinga/icinga2/commit/ed163a8aa9d296820dd2ad14c47bf3f6a3fcce7dhttps://github.com/Icinga/icinga2/pull/10908https://github.com/Icinga/icinga2/releases/tag/v2.14.9https://github.com/Icinga/icinga2/releases/tag/v2.15.4https://github.com/Icinga/icinga2/releases/tag/v2.16.2https://github.com/Icinga/icinga2/security/advisories/GHSA-wh38-wg57-5w7ghttps://icinga.com/blog/icinga2-security-release-v2-16-2