Overview
- Description
- External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.
- Source
- security@open-xchange.com
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 3.1
- Impact score
- 1.4
- Exploitability score
- 1.6
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
- Severity
- LOW
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D41FD049-C028-4C6D-A9D7-9DD1820B2C5F"
},
{
"criteria": "cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:8.10.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "332D5572-4F7D-498F-9E01-F8555674B4B0"
}
],
"operator": "OR"
}
]
}
]