Vulnerability Name:

CVE-2019-11924 (CCN-166586)

Assigned:2019-08-20
Published:2019-08-20
Updated:2020-08-24
Summary:A peer could send empty handshake fragments containing only padding which would be kept in memory until a full handshake was received, resulting in memory exhaustion. This issue affects versions v2019.01.28.00 and above of fizz, until v2019.08.05.00.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-770
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-11924

Source: XF
Type: UNKNOWN
fizz-cve201911924-dos(166586)

Source: CCN
Type: Fizz GIT Repository
Fizz

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/facebookincubator/fizz/commit/3eaddb33619eaaf74a760872850c550ad8f5c52f

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/facebookincubator/fizz/commit/6bf67137ef1ee5cd70c842b014c322b7deaf994b

Source: CCN
Type: Facebook Web site
CVE-2019-11924

Source: CONFIRM
Type: Vendor Advisory
https://www.facebook.com/security/advisories/cve-2019-11924

Vulnerable Configuration:Configuration 1:
  • cpe:/a:facebook:fizz:*:*:*:*:*:*:*:* (Version >= 2019.01.28.00 and <= 2019.08.05.00)

    • Configuration CCN 1:
  • cpe:/a:facebook:fizz:2019.01.28.00:*:*:*:*:*:*:*
  • OR cpe:/a:facebook:fizz:2019.08.05.00:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    facebook fizz *
    facebook fizz 2019.01.28.00
    facebook fizz 2019.08.05.00