SB2016032210 - Heap-based buffer overflow in busybox (Alpine package)

Description

This security bulletin contains information about 1 vulnerability.

1) Heap-based buffer overflow (CVE-ID: CVE-2016-2148)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in udhcpc client when parsing DHCP packets with specially crafted OPTION_6RD option. A remote attacker can trick the victim to connect to malicious DHCP server, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=7bc6c09d16e91cb19bc94a68354c9ac892505aca
• https://git.alpinelinux.org/aports/commit/?id=6525b7aa7fbb97336a7656a5408d6505c2ac7ca3
• https://git.alpinelinux.org/aports/commit/?id=c922c8691878adba30461fdc8b068973853e1ba3