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CVE-2026-4437

Опубликовано: 20 мар. 2026
Источник: ubuntu
Приоритет: medium
CVSS3: 7.5

Описание

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.

РелизСтатусПримечание
devel

DNE

esm-infra-legacy/trusty

needs-triage

jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

2.43-2ubuntu2
esm-infra-legacy/xenial

not-affected

code not present
esm-infra/bionic

not-affected

code not present
esm-infra/focal

not-affected

code not present
esm-infra/xenial

not-affected

code not present
jammy

not-affected

code not present
noble

released

2.39-0ubuntu8.8
questing

ignored

end of life, was needed
resolute

not-affected

2.43-2ubuntu2
upstream

needs-triage

Показывать по

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 6.5
redhat
4 месяца назад

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.

CVSS3: 7.5
nvd
4 месяца назад

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.

CVSS3: 5.9
msrc
4 месяца назад

gethostbyaddr and gethostbyaddr_r may incorrectly handle DNS response

CVSS3: 7.5
debian
4 месяца назад

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.co ...

CVSS3: 7.5
github
4 месяца назад

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.

7.5 High

CVSS3