A vulnerability, which was classified as problematic, has been found in Bytom up to 1.0.5. Affected by this issue is the function checkTopicRegister of the file p2p/discover/net.go. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is availability. CVE summarizes:

In the client in Bytom before 1.0.6, checkTopicRegister in p2p/discover/net.go does not prevent negative idx values, leading to a crash.

The bug was discovered 08/31/2018. The weakness was shared 10/10/2018 (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2018-18206 since 10/10/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 40 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.0.6 eliminates this vulnerability.

Productinfo

Name

• Bytom

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5

License

• open-source

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CPE 2.2info

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