CVE-2019-12527
Published: 11 July 2019
An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.
Notes
| Author | Note |
|---|---|
| mdeslaur | code in 3.5 is different and doesn't look vulnerable. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
squid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Released
(4.4-1ubuntu2.2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.8)
|
|
| xenial |
Does not exist
|
|
|
Patches: upstream: https://github.com/squid-cache/squid/commit/2582f64a7a33577cd31a82f34da95f3c6e4f5415 upstream: https://github.com/squid-cache/squid/commit/7f73e9c5d17664b882ed32590e6af310c247f320 |
||
|
squid3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needed
|
|
| xenial |
Not vulnerable
(code not present)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |