CVE-2019-17498
HIGH 8.1EPSS 3.8%
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.
- CVSS v3.1 NVD
- 8.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H - CVSS v2.0 NVD
- 5.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:P - EPSS
- 3.81% chance of exploitation in the next 30 days, 90th percentile
- Published
- 2019-10-21
- Updated
- 2026-10-14
Exploit collections (1)
- libssh2/out_of_bounds_read_disconnect_CVE-2019-17498github/securitylab
Security advisories
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html
- kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out…
- libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480
- https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
- https://security.netapp.com/advisory/ntap-20220909-0004