Vulnerability Details : CVE-2021-3405
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-3405
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:matroska:libebml:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3405
1.64%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 87 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3405
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-3405
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2021-3405
-
https://github.com/Matroska-Org/libebml/issues/74
Ebml[Unicode]String::ReadData heap overflow bug on 32bit builds · Issue #74 · Matroska-Org/libebml · GitHubExploit;Issue Tracking;Third Party Advisory
-
https://security.gentoo.org/glsa/202208-21
libebml: Heap buffer overflow vulnerability (GLSA 202208-21) — Gentoo securityThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHIIMWZKHHELFF4NRDMOOCS3HKK3K4DF/
[SECURITY] Fedora 34 Update: libebml-1.4.2-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YY7R2JZRO5I6WS62KTJFTZGKYELVFTVB/
[SECURITY] Fedora 32 Update: libebml-1.4.2-1.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/04/msg00016.html
[SECURITY] [DLA 2629-1] libebml security updateThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JNHQI6MDOECJ2HT5GCLEX2DMJFEOWPW7/
[SECURITY] Fedora 33 Update: libebml-1.4.2-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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