CVE-2019-3863
Public on 2019-03-25
Modified on 2019-08-12
Description
A flaw was found in libssh2. A server could send a multiple keyboard interactive response messages, whose total length are greater than the unsigned char max characters. This value is used as an index to copy memory causing in an out of bounds memory write error. The highest threat from this vulnerability is to data confidentiality and integrity and system availability.
Severity
Important
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | libssh2 | 2019-08-12 | ALAS-2019-1254 | Fixed |
| Amazon Linux 2 - Core | libssh2 | 2019-04-25 | ALAS2-2019-1199 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.5 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | CVSSv2 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| NVD | CVSSv3 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |