Vulnerability Monitor

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CVE-2019-20393

A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.

Published

2020-01-22T22:15:10.237

Last Modified

2024-11-21T04:38:22.720

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-415
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cesnet libyang 0.11 Yes
Application cesnet libyang 0.11 Yes
Application cesnet libyang 0.12 Yes
Application cesnet libyang 0.12 Yes
Application cesnet libyang 0.13 Yes
Application cesnet libyang 0.13 Yes
Application cesnet libyang 0.14 Yes
Application cesnet libyang 0.15 Yes
Application cesnet libyang 0.16 Yes
Application cesnet libyang 0.16 Yes
Application cesnet libyang 0.16 Yes
References