CVE-2023-37475 Attacker-controlled parameter can cause denial of service in hamba avro

2023-07-1716:36:23

CWE-400

GitHub_M

www.cve.org

denial of service

hamba avro

vulnerability

upgrade

version 2.13.0

unrecoverable error

memory consumption

security

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

32.8%

JSON

Hamba avro is a go lang encoder/decoder implementation of the avro codec specification. In affected versions a well-crafted string passed to avro’s github.com/hamba/avro/v2.Unmarshal() can throw a fatal error: runtime: out of memory which is unrecoverable and can cause denial of service of the consumer of avro. The root cause of the issue is that avro uses part of the input to Unmarshal() to determine the size when creating a new slice and hence an attacker may consume arbitrary amounts of memory which in turn may cause the application to crash. This issue has been addressed in commit b4a402f4 which has been included in release version 2.13.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CNA Affected

[
  {
    "vendor": "hamba",
    "product": "avro",
    "versions": [
      {
        "version": "< 2.13.0",
        "status": "affected"
      }
    ]
  }
]