CVE-2020-6080
Published: 24 March 2020
An exploitable denial-of-service vulnerability exists in the resource allocation handling of Videolabs libmicrodns 0.1.0. When encountering errors while parsing mDNS messages, some allocated data is not freed, possibly leading to a denial-of-service condition via resource exhaustion. An attacker can send one mDNS message repeatedly to trigger this vulnerability through the function rr_read_RR [5] reads the current resource record, except for the RDATA section. This is read by the loop at in rr_read. For each RR type, a different function is called. When the RR type is 0x10, the function rr_read_TXT is called at [6].
Priority
Status
| Package | Release | Status |
|---|---|---|
|
vlc Launchpad, Ubuntu, Debian |
groovy |
Ignored
(end of life)
|
| bionic |
Needs triage
|
|
| focal |
Needs triage
|
|
| upstream |
Needs triage
|
|
| hirsute |
Ignored
(end of life)
|
|
| jammy |
Needs triage
|
|
| impish |
Ignored
(end of life)
|
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| xenial |
Needs triage
|
|
| lunar |
Needs triage
|
|
| mantic |
Needs triage
|
|
|
libmicrodns Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| impish |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| mantic |
Does not exist
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |