CVE-2019-3863

HIGH
7.5
CVSS Score
Published: March 25, 2019 at 05:52 PM UTC
Updated: October 14, 2026 at 07:16 AM UTC
10 products affected across 5 vendorsDebian LinuxEnterprise Linux DesktopLeap

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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

A flaw was found in libssh2 before 1.8.1. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out of bounds memory write error.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (17)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:0679

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190CWE-787

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