Vulnerability Name:

CVE-2020-18776 (CCN-208149)

Assigned:2019-03-26
Published:2019-03-26
Updated:2021-08-31
Summary:In Libav 12.3, there is a segmentation fault in vc1_decode_b_mb_intfr in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-18776

Source: CCN
Type: Bugzilla – Bug 1153
segment fault in vc1_decode_b_mb_intfr in vc1_block.c

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.libav.org/show_bug.cgi?id=1153

Source: XF
Type: UNKNOWN
libavif-cve202018776-dos(208149)

Source: CCN
Type: Libavif Web site
libavif

Vulnerable Configuration:Configuration 1:
  • cpe:/a:libav:libav:12.3:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:libav:libav:12.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    libav libav 12.3
    libav libav 12.3