CVE-2018-20102 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 b...
HighCVSS 7.5
EPSS 4.2%
- Published
- Updated
- Exploit status
- No public exploit known
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/haproxy(Debian:12) | < 1.8.15-1 | 1.8.15-1 |
| debian/haproxy(Debian:13) | < 1.8.15-1 | 1.8.15-1 |
| debian/haproxy(Debian:14) | < 1.8.15-1 | 1.8.15-1 |
| HAProxy | <= 1.8.14 | No fix listed |
| Canonical Ubuntu Linux | = 16.04 | No fix listed |
| Canonical Ubuntu Linux | = 18.04 | No fix listed |
| Canonical Ubuntu Linux | = 18.10 | No fix listed |
| redhat openshift container platform | = 3.11 | No fix listed |
References
- Debian Security Tracker CVE-2018-20102 vendor-advisory
- git.haproxy.org
- 106223 third-party-advisory vdb-entry
- RHBA-2019:0326 third-party-advisory vendor-advisory
- RHBA-2019:0327 third-party-advisory vendor-advisory
- RHSA-2019:1436 vendor-advisory
- [debian-lts-announce] 20220530 [SECURITY] [DLA 3034-1] haproxy security update mailing-list
- USN-3858-1 third-party-advisory vendor-advisory
- bugs.debian.org issue-tracking