Flexense SyncBreeze Enterprise 10.1.16 HTTP Server GET Request memory corruption

Summaryinfo

A vulnerability, which was classified as critical, was found in Flexense SyncBreeze Enterprise 10.1.16. This vulnerability affects unknown code of the component HTTP Server. Such manipulation as part of GET Request leads to memory corruption. This vulnerability is listed as CVE-2017-17099. The attack must be carried out locally. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in Flexense SyncBreeze Enterprise 10.1.16. It has been rated as critical. Affected by this issue is some unknown functionality of the component HTTP Server. The manipulation as part of a GET Request 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:

There exists an unauthenticated SEH based Buffer Overflow vulnerability in the HTTP server of Flexense SyncBreeze Enterprise v10.1.16. When sending a GET request with an excessive length, it is possible for a malicious user to overwrite the SEH record and execute a payload that would run under the Windows SYSTEM account.

The bug was discovered 11/23/2017. The weakness was presented 12/03/2017 as EDB-ID 42984 as not defined exploit (Exploit-DB). The advisory is shared for download at exploit-db.com. This vulnerability is handled as CVE-2017-17099 since 12/03/2017. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

After immediately, there has been an exploit disclosed. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 10 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 vulnerability is also documented in the vulnerability database at Exploit-DB (42984). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Flexense

Name

• SyncBreeze Enterprise

Version

• 10.1.16

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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