Integer Overflow Vulnerability in libssh2 Affects Multiple Vendors
CVE-2019-3856

7.5HIGH

Key Information:

Status
Vendor
CVE Published:
25 March 2019

What is CVE-2019-3856?

An integer overflow vulnerability in libssh2 allows a remote attacker to create malicious keyboard prompts that, when handled by a client, can result in an out-of-bounds write. This could lead to arbitrary code execution on the client’s system. Users connecting to compromised SSH servers are particularly at risk, necessitating immediate updates to versions earlier than 1.8.1 to mitigate potential exploitation.

Affected Version(s)

libssh2 1.8.1

References

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

CVSS V3.0

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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