CVE-2020-24606
Published: 24 August 2020
Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.
Priority
Status
Package | Release | Status |
---|---|---|
squid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Released
(4.10-1ubuntu1.2)
|
|
groovy |
Released
(4.13-1ubuntu1)
|
|
hirsute |
Released
(4.13-1ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
Patches: upstream: http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_9.patch |
||
squid3 Launchpad, Ubuntu, Debian |
bionic |
Released
(3.5.27-1ubuntu1.9)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
hirsute |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Released
(3.5.12-1ubuntu7.15)
|
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 |