CVE-2021-3405
6.5 MEDIUMA flaw was found in libebml before 1.4.2
Published: 2021-02-23 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 6.5 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CWE
- CWE-787
Affected products
| Vendor | Product |
|---|---|
| debian | debian_linux, fedora, libebml |
| fedoraproject | debian_linux, fedora, libebml |
| matroska | debian_linux, fedora, libebml |
Description
A flaw was found in libebml before 1.4.2. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-3405
- [Exploit reference]https://github.com/Matroska-Org/libebml/issues/74
- [Other]https://lists.debian.org/debian-lts-announce/2021/04/msg00016.html
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNHQI6MDOECJ2HT5GCLEX2DMJFEOWPW7/
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHIIMWZKHHELFF4NRDMOOCS3HKK3K4DF/
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YY7R2JZRO5I6WS62KTJFTZGKYELVFTVB/
- [Other]https://security.gentoo.org/glsa/202208-21
- [Exploit reference]https://github.com/Matroska-Org/libebml/issues/74
- [Other]https://lists.debian.org/debian-lts-announce/2021/04/msg00016.html
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNHQI6MDOECJ2HT5GCLEX2DMJFEOWPW7/
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHIIMWZKHHELFF4NRDMOOCS3HKK3K4DF/
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YY7R2JZRO5I6WS62KTJFTZGKYELVFTVB/
- [Other]https://security.gentoo.org/glsa/202208-21
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