CVE-2018-20102
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-20102
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-20102.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201901-15
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1.9.0-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 1.8.15-1 |
| debian | bullseye | fixed | 1.8.15-1 |
| debian | forky | fixed | 1.8.15-1 |
| debian | sid | fixed | 1.8.15-1 |
| debian | trixie | fixed | 1.8.15-1 |
References
Verify integrity in audit chain (admin only). AS-IS.