CVE-2019-20637
Published: 8 April 2020
An issue was discovered in Varnish Cache before 6.0.5 LTS, 6.1.x and 6.2.x before 6.2.2, and 6.3.x before 6.3.1. It does not clear a pointer between the handling of one client request and the next request within the same connection. This sometimes causes information to be disclosed from the connection workspace, such as data structures associated with previous requests within this connection or VCL-related temporary headers.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
varnish Launchpad, Ubuntu, Debian |
bionic |
Released
(5.2.1-1ubuntu0.1)
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Released
(6.2.1-2ubuntu0.1)
|
|
| groovy |
Not vulnerable
(6.4.0-2)
|
|
| hirsute |
Not vulnerable
(6.4.0-2)
|
|
| impish |
Not vulnerable
(6.4.0-2)
|
|
| jammy |
Not vulnerable
(6.4.0-2)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(code not present)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |