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TalosCVE-2019-5020

HistoryJul 31, 2019 - 5:15 p.m.

CVE-2019-5020

2019-07-3117:15:11

CWE-754

CWE-617

talos

web.nvd.nist.gov

cve-2019-5020

yara

denial of service

vulnerability

exploit

nvd

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

23.5%

JSON

An exploitable denial of service vulnerability exists in the object lookup functionality of Yara 3.8.1. A specially crafted binary file can cause a negative value to be read to satisfy an assert, resulting in Denial of Service. An attacker can create a malicious binary to trigger this vulnerability.

Affected configurations

Nvd

Node

virustotalyaraMatch3.8.1

VendorProductVersionCPE
virustotalyara3.8.1cpe:2.3:a:virustotal:yara:3.8.1:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
virustotal	yara	3.8.1	cpe:2.3:a:virustotal:yara:3.8.1:::::::*

CNA Affected

[
  {
    "product": "Yara Object",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Yara 3.8.1"
      }
    ]
  }
]

References

talosintelligence.com/vulnerability_reports/TALOS-2019-0781

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

23.5%

JSON

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