dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that...

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that allows unauthenticated same-link attackers to write beyond a fixed local buffer by serializing an oversized RFC6603 OPTION_PD_EXCLUDE option body. Attackers can send a crafted DHCPv6 ADVERTISE message containing an IA_PD IAPREFIX /0 with a valid OPTION_PD_EXCLUDE using an exclude prefix length of /121 through /128 to trigger the out-of-bounds write and potentially corrupt adjacent stack memory.

出典: OSV.dev (Open Source Vulnerabilities) OSV

影響パッケージ

Alpine:v3.23 dhcpcd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.5.2-r0"}]}]

Alpine:v3.24 dhcpcd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.5.2-r0"}]}]

参照URL

advisory security.alpinelinux.org