Vulnerability Details : CVE-2018-20177

rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in the function rdp_in_unistr() and results in memory corruption and possibly even a remote code execution.
Published 2019-03-15 18:29:00
Updated 2023-03-03 21:01:43
Source MITRE
View at NVD,   CVE.org
Vulnerability category: OverflowMemory CorruptionExecute code

Products affected by CVE-2018-20177

Exploit prediction scoring system (EPSS) score for CVE-2018-20177

EPSS FAQ
5.49%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 93 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-20177

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
 NIST
9.8
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
 NIST

CWE ids for CVE-2018-20177

  • 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 occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
    Assigned by: nvd@nist.gov (Primary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-20177

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