A vulnerability was found in dhcpcd up to 7.2.0. It has been rated as critical. Affected by this issue is the function dhcp6_findna of the file dhcp6.c of the component NA-TA Address Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

dhcpcd before 7.2.1 contains a buffer overflow in dhcp6_findna in dhcp6.c when reading NA/TA addresses.

The bug was discovered 04/19/2019. The weakness was published 04/28/2019 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2019-11577 since 04/28/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 7.2.1 eliminates this vulnerability.

Similar entries are available at 134181 and 134182.

Productinfo

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• dhcpcd

Version

• 7.0
• 7.1
• 7.2

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CPE 2.2info

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