Asus RT-N300 networkmap ASUS_Discovery.c memory corruption

Summaryinfo

A vulnerability was found in Asus RT-AC68P, RT-AC88U, RT-AC66U, RT-AC66U_B1, RT-AC58U, RT-AC56U, RT-AC55U, RT-AC52U, RT-AC51U, RT-N18U, RT-N66U, RT-N56U, RT-AC3200, RT-AC3100, RT_AC1200GU, RT_AC1200G, RT-AC1200, RT-AC53, RT-N12HP, RT-N12HP_B1, RT-N12D1, RT-N12+, RT_N12+_PRO, RT-N16 and RT-N300 and classified as critical. This vulnerability affects unknown code of the file ASUS_Discovery.c of the component networkmap. Executing a manipulation can lead to memory corruption. The identification of this vulnerability is CVE-2017-11420. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Asus RT-AC68P, RT-AC88U, RT-AC66U, RT-AC66U_B1, RT-AC58U, RT-AC56U, RT-AC55U, RT-AC52U, RT-AC51U, RT-N18U, RT-N66U, RT-N56U, RT-AC3200, RT-AC3100, RT_AC1200GU, RT_AC1200G, RT-AC1200, RT-AC53, RT-N12HP, RT-N12HP_B1, RT-N12D1, RT-N12+, RT_N12+_PRO, RT-N16 and RT-N300. This vulnerability affects an unknown code of the file ASUS_Discovery.c of the component networkmap. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in ASUS_Discovery.c in networkmap in Asuswrt-Merlin firmware for ASUS devices and ASUS firmware for ASUS RT-AC5300, RT_AC1900P, RT-AC68U, RT-AC68P, RT-AC88U, RT-AC66U, RT-AC66U_B1, RT-AC58U, RT-AC56U, RT-AC55U, RT-AC52U, RT-AC51U, RT-N18U, RT-N66U, RT-N56U, RT-AC3200, RT-AC3100, RT_AC1200GU, RT_AC1200G, RT-AC1200, RT-AC53, RT-N12HP, RT-N12HP_B1, RT-N12D1, RT-N12+, RT_N12+_PRO, RT-N16, and RT-N300 devices allows remote attackers to execute arbitrary code via long device information that is mishandled during a strcat to a device list.

The bug was discovered 07/13/2017. The weakness was shared 07/18/2017 (Website). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2017-11420 since 07/18/2017. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful 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 5 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-97734, VDB-97735, VDB-103657 and VDB-103658 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Asus

Name

• RT-AC51U
• RT-AC52U
• RT-AC53
• RT-AC55U
• RT-AC56U
• RT-AC58U
• RT-AC66U
• RT-AC66U_B1
• RT-AC68P
• RT-AC88U
• RT-AC1200
• RT-AC3100
• RT-AC3200
• RT-N12+
• RT-N12D1
• RT-N12HP
• RT-N12HP_B1
• RT-N16
• RT-N18U
• RT-N56U
• RT-N66U
• RT-N300
• RT_AC1200G
• RT_AC1200GU
• RT_N12+_PRO

License

• commercial

Website

• Vendor: https://www.asus.com/

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Entryinfo

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