CVE-2024-43380 fugit parse and parse_nat stall on lengthy input

2024-08-1914:37:39

CWE-400

GitHub_M

github.com

cve-2024-43380

fugit parse

parse_nat

lengthy input

natural parser

fugit 1.11.1

time tools

flor

floraison group

plausibility

impacted

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

AI Score

6.8

Confidence

Low

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

fugit contains time tools for flor and the floraison group. The fugit “natural” parser, that turns “every wednesday at 5pm” into “0 17 * * 3”, accepted any length of input and went on attempting to parse it, not returning promptly, as expected. The parse call could hold the thread with no end in sight. Fugit dependents that do not check (user) input length for plausibility are impacted. A fix was released in fugit 1.11.1.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:floraison:fugit:*:*:*:*:*:*:*:*"
    ],
    "vendor": "floraison",
    "product": "fugit",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "1.11.1",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  }
]