CVE-2019-17498
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.
- Score
- CVSS 3.1 8.1 High
- Status
- Modified - cve@mitre.org
- Published
- 2019-10-21
- Last modified
- 2026-10-14
- Weaknesses
- CWE-190
Affected products
- Debian Linux (Debian)
- Fedora (Fedoraproject)
- Libssh2 (Libssh2)
- Active Iq Unified Manager (Netapp)
- Bootstrap Os (Netapp)
- Element Software (Netapp)
- Hci Management Node (Netapp)
- Ontap Select Deploy Administration Utility (Netapp)
- Solidfire (Netapp)
- Leap (Opensuse)
- Simatic S7-1500 Cpu 1518-4 Pndp Mfp (Siemens)
- Simatic S7-1500 Cpu 1518f-4 Pndp Mfp (Siemens)
- Siplus S7-1500 Cpu 1518-4 Pndp Mfp (Siemens)
References
- https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480
- https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/
- https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_…
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWS…
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html
- https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7…
- https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c
- https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
- https://security.netapp.com/advisory/ntap-20220909-0004/
- http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html
- https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
