Processing time of drive search expressions now gets monitored, and the related request is terminated if a resource threshold is reached.

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• open-xchange open-xchange appsuitebefore 7.6.3
• open-xchange open-xchange appsuiteafter 7.6.3 · before 7.10.6
• open-xchange open-xchange appsuiteafter 7.10.6 · before 8.20
• open-xchange open-xchange appsuite7.10.6
• open-xchange open-xchange appsuite7.6.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (OX). Independent of NVD's CPE analysis and usually ahead of it.

• Open-Xchange GmbH OX App Suite

  • up to and including 7.10.6-rev55affected · semver
  • up to and including 7.6.3-rev71affected · semver
  • up to and including 8.19affected · semver

Other highest-scoring records for the same primary product.

• CVE-2020-12645OX App Suite 7.10.1 to 7.10.3 has improper input validation for rate limits with a crafted User-Agent header, spoofed vacation notices, and
  39Monitor
• CVE-2019-7158OX App Suite 7.10.0 and earlier has Incorrect Access Control.
  39Monitor
• CVE-2017-13667OX Software GmbH OX App Suite 7.8.4 and earlier is affected by: SSRF.
  39Monitor
• CVE-2017-5212Open-Xchange GmbH OX App Suite 7.8.3 is affected by: Incorrect Access Control.
  39Monitor
• CVE-2017-5210Open-Xchange GmbH OX App Suite 7.8.3 and earlier is affected by: Information Exposure.
  39Monitor
• CVE-2017-17060OX Software GmbH OX App Suite 7.8.4 and earlier is affected by: Insecure Permissions.
  39Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.