UbuntuUSN-5008-1Avahi vulnerabilities
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.1 Medium
AI Score
Confidence
High
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
0.0004 Low
EPSS
Percentile
5.3%
Releases
- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 ESM
Packages
- avahi - IPv4LL network address configuration daemon
Details
Thomas Kremer discovered that Avahi incorrectly handled termination signals
on the Unix socket. A local attacker could possibly use this issue to cause
Avahi to hang, resulting in a denial of service. This issue only affected
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2021-3468)
It was discovered that Avahi incorrectly handled certain hostnames. A local
attacker could possibly use this issue to cause Avahi to crash, resulting
in a denial of service. This issue only affected Ubuntu 20.10 and Ubuntu
21.04. (CVE-2021-3502)
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Ubuntu | 21.04 | noarch | libavahi-core7 | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-autoipd | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-autoipd-dbgsym | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-daemon | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-daemon-dbgsym | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-discover | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-dnsconfd | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-dnsconfd-dbgsym | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-ui-utils | < 0.8-5ubuntu3.1 | UNKNOWN |
| Ubuntu | 21.04 | noarch | avahi-ui-utils-dbgsym | < 0.8-5ubuntu3.1 | UNKNOWN |
Related
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.1 Medium
AI Score
Confidence
High
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
0.0004 Low
EPSS
Percentile
5.3%