A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-1730-1 | libssh2 security update |
Debian DSA |
DSA-4431-1 | libssh2 security update |
EUVD |
EUVD-2019-13477 | 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. |
Ubuntu USN |
USN-5308-1 | libssh2 vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 19 Dec 2025 03:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error. |
Wed, 23 Apr 2025 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-12-19T03:02:32.466Z
Reserved: 2019-01-03T00:00:00.000Z
Link: CVE-2019-3863
Updated: 2024-08-04T19:19:18.614Z
Status : Modified
Published: 2019-03-25T18:29:01.590
Modified: 2025-12-19T04:15:59.683
Link: CVE-2019-3863
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
EUVD
Ubuntu USN