CVE-2019-5020
CVE-2019-5020 is a medium-severity vulnerability in Virustotal Yara with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-617.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-617
- Affected product: Virustotal Yara
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2019-5020?
- 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.
- How severe is CVE-2019-5020?
- CVE-2019-5020 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2019-5020 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-5020?
- CVE-2019-5020 affects Virustotal Yara. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-5020?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-5020 published?
- CVE-2019-5020 was published on 2019-07-31 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:virustotal:yara:3.8.1:*:*:*:*:*:*:*
More vulnerabilities in Virustotal Yara
- CVE-2021-3402 — Critical (CVSS 9.1): An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earlier could…
- CVE-2023-40857 — High (CVSS 8.8): Buffer Overflow vulnerability in VirusTotal yara v.4.3.2 allows a remote attacker to execute arbtirary code via the…
- CVE-2019-19648 — High (CVSS 7.8): In the macho_parse_file functionality in macho/macho.c of YARA 3.11.0, command_size may be inconsistent with the real…
- CVE-2018-12035 — High (CVSS 7.8): In YARA 3.7.1 and prior, parsing a specially crafted compiled rule file can cause an out of bounds write vulnerability…
- CVE-2018-12034 — High (CVSS 7.8): In YARA 3.7.1 and prior, parsing a specially crafted compiled rule file can cause an out of bounds read vulnerability…
- CVE-2017-9438 — High (CVSS 7.5): libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack…
All CVEs affecting Virustotal Yara →
Other CWE-617 (Reachable Assertion) vulnerabilities
- CVE-2020-3615 — Critical (CVSS 9.8): Valid deauth/disassoc frames is dropped in case if RMF is enabled and some rouge peer keep on sending rogue…
- CVE-2019-9795 — Critical (CVSS 9.8): A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by…
- CVE-2026-31739 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: crypto: tegra - Add missing CRYPTO_ALG_ASYNC The…
- CVE-2020-12417 — High (CVSS 8.8): Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in…
- CVE-2020-6623 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.
- CVE-2020-6619 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__buf_seek.