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 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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
VendorProductVersion
haproxyhaproxy
𝑥
≤ 1.8.14
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
18.10
redhatopenshift_container_platform
3.11
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
haproxy
bullseye (security)
2.2.9-2+deb11u6
fixed
bullseye
2.2.9-2+deb11u6
fixed
jessie
not-affected
bookworm
2.6.12-1+deb12u1
fixed
bookworm (security)
2.6.12-1+deb12u1
fixed
sid
2.9.11-1
fixed
trixie
2.9.11-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
haproxy
cosmic
Fixed 1.8.13-2ubuntu0.1
released
bionic
Fixed 1.8.8-1ubuntu0.3
released
xenial
Fixed 1.6.3-1ubuntu0.2
released
trusty
dne