Buffer overflow in Ytnef_project Ytnef
CVE-2021-3404
In ytnef 1.9.3, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a heap buffer overflow which can be triggered via a crafted file.
Vulnerability class: Buffer Overflow
EPSS: 0.019 (77.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Ytnef_project Ytnef — versions 1.9.3
- Fedoraproject Fedora — versions 33
- Redhat Enterprise_linux — versions 7.0
- N/a Ytnef — versions All versions
Weakness classification (CWE)
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2021-3404?
- CVE-2021-3404 is a high-severity vulnerability in Ytnef_project Ytnef, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2021-03-04.
- How severe is CVE-2021-3404?
- High severity. CVSS v3 base score is 7.8 out of 10.