CVE-2019-3856
8.8
HIGH
CVSS 3.1
EPSS 4.6%
Description
An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
How to fix CVE-2019-3856
To remediate CVE-2019-3856, upgrade the affected package to a fixed version below.
- Alpine/libssh2—upgrade to 1.8.1-r0 or later
- —upgrade to 1.8.0-2.1 or later
Is CVE-2019-3856 being exploited?
Low — EPSS is 4.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.8.1-r0
- from 0, < 1.8.0-2.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |