Vulnerability Name:

CCN-153432

Published:2018-11-28
Updated:2018-11-28
Summary:Avahi is vulnerable to a denial of service, caused by an issue when Avahi-daemon inadvertently sends Legacy Unicast Responses to IPv4 unicast queries with source addresses that are not link-local. By sending specially-crafted UDP packets, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS v3 Severity:6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:U/RC:R)
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): Low
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:6.4 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): Partial
Vulnerability Consequences:Denial of Service
References:Source: XF
Type: UNKNOWN
avahi-avahidaemon-dos(153432)

Source: CCN
Type: avahi GIT Repository
Missing link-local checks in Avahi makes DDoS with mDNS traffic reflection possible #203

Source: CCN
Type: Packet Storm Security [11-28-2018]
Avahi 0.7 Denial Of Service

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:avahi:avahi:0.7:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    avahi avahi 0.7