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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.1 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
mitreCNA
---
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 83%
VendorProductVersion
libssh2libssh2
𝑥
≤ 1.9.0
opensuseleap
15.1
debiandebian_linux
8.0
debiandebian_linux
9.0
netappactive_iq_unified_manager
-
netappelement_software
-
netapphci_management_node
-
netappontap_select_deploy_administration_utility
-
netappsolidfire
-
netappbootstrap_os
-
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libssh2
bullseye
1.9.0-2+deb11u1
fixed
bookworm
1.10.0-3
fixed
sid
1.11.1-1
fixed
trixie
1.11.1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libssh2
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
ignored
focal
needed
eoan
ignored
disco
ignored
bionic
needed
xenial
Fixed 1.5.0-2ubuntu0.1+esm1
released
trusty
Fixed 1.4.3-2ubuntu0.2+esm2
released
Common Weakness Enumeration
References
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html
http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html
https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/
https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498
https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480
https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c
https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html
https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/
https://security.netapp.com/advisory/ntap-20220909-0004/
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html
http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html
https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/
https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498
https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480
https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c
https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html
https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/
https://security.netapp.com/advisory/ntap-20220909-0004/