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CVE-2020-18775

Date: August 23, 2021

In Libav 12.3, there is a heap-based buffer over-read in vc1_decode_b_mb_intfi in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.

Language: C

Severity Score

Related Resources (4)

https://bugzilla.libav.org/show_bug.cgi?id=1152
https://cwe.mitre.org/data/definitions/126.html
https://nvd.nist.gov/vuln/detail/CVE-2020-18775
https://www.mend.io/vulnerability-database/CVE-2020-18775

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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