CVE-2020-18778 — MEDIUM (6.5)

Vulnerability Description

In Libav 12.3, there is a heap-based buffer over-read in vc1_decode_p_mb_intfi in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Libav	Libav	12.3

Related Weaknesses (CWE)

CWE-125

References

https://bugzilla.libav.org/show_bug.cgi?id=1155Broken LinkExploitIssue Tracking
https://cwe.mitre.org/data/definitions/126.htmlTechnical Description
https://bugzilla.libav.org/show_bug.cgi?id=1155Broken LinkExploitIssue Tracking
https://cwe.mitre.org/data/definitions/126.htmlTechnical Description

FAQ

What is CVE-2020-18778?

CVE-2020-18778 is a vulnerability with a CVSS score of 6.5 (MEDIUM). In Libav 12.3, there is a heap-based buffer over-read in vc1_decode_p_mb_intfi in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.

How severe is CVE-2020-18778?

CVE-2020-18778 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-18778?

Check the references section above for vendor advisories and patch information. Affected products include: Libav Libav.