CVE-2022-47934: Brave Browser before 1.43.88 allowed a remote attacker to cause a denial of service in private and guest windows via a crafted HTML file tha

Affected versions

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

• brave bravebefore 1.43.88

Other highest-scoring records for the same primary product.

• CVE-2021-45884In Brave Desktop 1.17 through 1.33 before 1.33.106, when CNAME-based adblocking and a proxying extension with a SOCKS fallback are enabled,
  31Monitor
• CVE-2022-47933Brave Browser before 1.42.51 allowed a remote attacker to cause a denial of service via a crafted HTML file that references the IPFS scheme.
  26Monitor
• CVE-2022-47932Brave Browser before 1.43.34 allowed a remote attacker to cause a denial of service via a crafted HTML file that mentions an ipfs:// or ipns
  26Monitor

Published before and after this one in the same product

• ← EarlierCVE-2021-22929Aug 31, 2021 · An information disclosure exists in Brave Browser Desktop prior to version 1.28.62, where logged warning messages that included timestamps o
  24Monitor
• ← EarlierCVE-2022-30334May 7, 2022 · Brave before 1.34, when a Private Window with Tor Connectivity is used, leaks .onion URLs in Referer and Origin headers.
  22Monitor
• Later →CVE-2023-28360May 11, 2023 · An omission of security-relevant information vulnerability exists in Brave desktop prior to version 1.48.171 when a user was saving a file t
  17Monitor

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.