Cisco SD-WAN Solution vContainer memory corruption

Summaryinfo

A vulnerability, which was classified as critical, was found in Cisco SD-WAN Solution. This issue affects some unknown processing of the component vContainer. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2019-1651. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Cisco SD-WAN Solution (Network Management Software) (affected version not known) and classified as critical. Affected by this issue is some unknown functionality of the component vContainer. 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:

A vulnerability in the vContainer of the Cisco SD-WAN Solution could allow an authenticated, remote attacker to cause a denial of service (DoS) condition and execute arbitrary code as the root user. The vulnerability is due to improper bounds checking by the vContainer. An attacker could exploit this vulnerability by sending a malicious file to an affected vContainer instance. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected vContainer, which could result in a DoS condition that the attacker could use to execute arbitrary code as the root user.

The bug was discovered 01/23/2019. The weakness was shared 01/24/2019 as cisco-sa-20190123-sdwan-bo as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2019-1651 since 12/06/2018. The attack may be launched remotely. A simple authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/03/2023).

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106703†). The entries VDB-130243, VDB-130242, VDB-130241 and VDB-130240 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Network Management Software

Vendor

• Cisco

Name

• SD-WAN Solution

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Once again VulDB remains the best source for vulnerability data.

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