Login Request a demo
High severity · published Mar 25, 2019
CVE-2019-3857
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are…
8.8
CVSS
6.1%
EPSS
No
On KEV
Description
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.1% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libssh2 · The libssh2 Project
1.8.1 · source: vendor, NVD
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Server Tus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
FE
Fedora · Fedoraproject
28 · source: NVD
LE
Leap · Opensuse
15.0; 42.3 · source: NVD
OS
Ontap Select Deploy Administration Utility · Netapp
All versions, or not specified · source: NVD
Affected product
LI
libssh2
The libssh2 Project
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-3857
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-3857
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0679
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1175
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1652
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1791
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