CVE-2019-3859
9.1
CRITICAL
CVSS 3.1
EPSS 1.2%
Description
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
How to fix CVE-2019-3859
To remediate CVE-2019-3859, 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-2019-3859 being exploited?
Low — EPSS is 1.2%, 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 | CRITICAL9.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |