CVE-2021-3405
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Matroska Libebml
PublishedFeb 23, 2021
First seenFeb 23, 2021
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- matroska libebml1.4.2 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YY7R2JZRO5I6WS62KTJFTZGKYELVFTVB/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNHQI6MDOECJ2HT5GCLEX2DMJFEOWPW7/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHIIMWZKHHELFF4NRDMOOCS3HKK3K4DF/
- security.gentoo.org/glsa/202208-21
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| matroska libebml | v < 1.4.2 | 1.4.2 |
| fedoraproject fedora | 32, 33, 34 | — |
| debian debian_linux | 9.0 | — |
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