CVE-2019-5020 — Reachable Assertion in Yara

CWE-617 — Reachable AssertionCWE-754 — Improper Check for Unusual or Exceptional ConditionsCWE-20 — Improper Input Validation5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.3%
top 47.83%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Virustotal Yara
Timeline
PublishedJul 31
Latest updateMay 24

Description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages2 packages

▶Debianvirustotal/yara< 3.9.0-1+3
▶NVDvirustotal/yara3.8.1

🔴Vulnerability Details

3
GHSA
GHSA-6r2m-f9j9-h374: An exploitable denial of service vulnerability exists in the object lookup functionality of Yara 3↗2022-05-24
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CVEList
CVE-2019-5020: An exploitable denial of service vulnerability exists in the object lookup functionality of Yara 3↗2019-07-31
▶
OSV
CVE-2019-5020: An exploitable denial of service vulnerability exists in the object lookup functionality of Yara 3↗2019-07-31
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📋Vendor Advisories

1
Debian
CVE-2019-5020: yara - An exploitable denial of service vulnerability exists in the object lookup funct...↗2019
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CVE-2019-5020 — Reachable Assertion in Virustotal Yara | cvebase