Out-of-bounds Read Affecting haproxy package, versions <1.8.15~git0.6b6a350a-3.6.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
4.15% (91st percentile)

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  • Snyk IDSNYK-SLES150-HAPROXY-2757314
  • published14 Apr 2022
  • disclosed10 Jan 2019

Introduced: 10 Jan 2019

CVE-2018-20102  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 haproxy to version 1.8.15~git0.6b6a350a-3.6.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream haproxy package and not the haproxy package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

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.