CVE-2018-20102
Published: 12 December 2018
An out-of-bounds read in dns_validate_dns_response in dns.c was discovered in HAProxy through 1.8.14. Due to a missing check when validating DNS responses, remote attackers might be able read the 16 bytes corresponding to an AAAA record from the non-initialized part of the buffer, possibly accessing anything that was left on the stack, or even past the end of the 8193-byte buffer, depending on the value of accepted_payload_size.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
haproxy Launchpad, Ubuntu, Debian |
bionic |
Released
(1.8.8-1ubuntu0.3)
|
| cosmic |
Released
(1.8.13-2ubuntu0.1)
|
|
| trusty |
Does not exist
(trusty was not-affected [code not present])
|
|
| upstream |
Released
(1.8.15-1)
|
|
| xenial |
Released
(1.6.3-1ubuntu0.2)
|
|
|
Patches: upstream: http://git.haproxy.org/?p=haproxy.git;a=commit;h=efbbdf72992cd20458259962346044cafd9331c0 |
||
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |