CVE-2019-17498
libssh2 - security update
8.1
HIGH
CVSS 3.1
EPSS 1.4%
Description
In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
How to fix CVE-2019-17498
To remediate CVE-2019-17498, upgrade the affected package to a fixed version below.
- —upgrade to 1.9.0-r1 or later
- —upgrade to 1.9.0-1 or later
- —upgrade to 1.4.3-4.1+deb8u6 or later
Is CVE-2019-17498 being exploited?
Low — EPSS is 1.4%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.9.0-r1
- from 0, < 1.9.0-1
- from 0, < 1.4.3-4.1+deb8u6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |