Out-of-Bounds Read Vulnerability in HAProxy (CVE-2018-20102)

CVE-2018-20102 · MEDIUM Severity

AV:N/AC:L/AU:N/C:P/I:N/A:N

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.

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