1) Buffer overflow

Risk: High

8.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]


CWE-120 – Buffer Copy without Checking Size of Input (‘Classic Buffer Overflow’)

Exploit availability:


The vulnerability allows a remote unauthenticated attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists in the unicode_to_ansi_copy() function due to buffer overflow. A remote attacker can send specially crafted input, cause the service to crash or execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.


Install updates from vendor’s website.

Vulnerable software versions

Red Hat Enterprise Linux Server – TUS:

unixODBC (Red Hat package):
before 2.3.1-14.el7_6


External links


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

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