In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the WebSocket HTTP upgrade implementation buffers the full http request before doing the handshake, holding the entire request body in memory. There should be a reasonnable limit (8192 bytes) above which the WebSocket gets an HTTP response with the 413 status code and the connection gets closed.
Published 2018-10-10 20:29:00
Updated 2022-04-19 16:13:04
View at NVD,   CVE.org
Vulnerability category: Overflow

Products affected by CVE-2018-12541

Exploit prediction scoring system (EPSS) score for CVE-2018-12541

0.31%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 71 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-12541

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.0
MEDIUM AV:N/AC:L/Au:S/C:N/I:N/A:P
8.0
2.9
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
NIST

CWE ids for CVE-2018-12541

  • The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
    Assigned by: nvd@nist.gov (Primary)
  • The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
    Assigned by: emo@eclipse.org (Secondary)

References for CVE-2018-12541

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