In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
Published 2019-10-21 22:15:11
Updated 2023-09-08 14:15:08
Source MITRE
View at NVD,   CVE.org
Vulnerability category: OverflowDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2019-17498

Probability of exploitation activity in the next 30 days: 0.41%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 71 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2019-17498

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
5.8
MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:P
8.6
4.9
NIST
8.1
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
2.8
5.2
NIST
8.1
HIGH AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
N/A
N/A
Oracle:CPUOct2023

CWE ids for CVE-2019-17498

  • 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.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-17498

Products affected by CVE-2019-17498

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