PT-2017-4172
CVE-2017-20006
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Published
2017-11-22
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Updated
2021-08-25
Description by
CVSS 2.0
9.3
HighMetricsAV:N/AC:M/Au:N/C:C/I:C/A:C
Name of the Vulnerable Software and Affected Versions
UnRAR versions 5.6.1.2 through 5.6.1.3
Description
The issue is related to a heap-based buffer overflow in the
Unpack::CopyString function, which is called from Unpack::Unpack5 and CmdExtract::ExtractCurrentFile. This can be exploited by a remote attacker to access confidential data, compromise data integrity, and cause a denial of service.Recommendations
For UnRAR versions 5.6.1.2 and 5.6.1.3, consider disabling the
Unpack::CopyString function as a temporary workaround until a patch is available. Restrict access to the UnRAR unpacking functionality to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability. Found an issue in the description? Have something to add? Feel free to write us 👾