CVE-2019-3857
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Libssh2
PublishedMar 25, 2019
First seenMar 25, 2019
Weakness typeCWE-190Integer overflowCWE-787Out-of-bounds write
How to fix
Vendor advisories
- access.redhat.com/errata/RHSA-2019:0679
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- debian.org/security/2019/dsa-4431
- access.redhat.com/errata/RHSA-2019:1175
- access.redhat.com/errata/RHSA-2019:1652
- access.redhat.com/errata/RHSA-2019:1791
- access.redhat.com/errata/RHSA-2019:1943
- access.redhat.com/errata/RHSA-2019:2399
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libssh2 libssh2 | 1.2.8 ≤ v ≤ 1.8.0 | — |
| debian debian_linux | 8.0, 9.0 | — |
| netapp ontap_select_deploy_administration_utility | No range specified | — |
| opensuse leap | 15.0, 42.3 | — |
| redhat enterprise_linux | 8.0 | — |
| redhat enterprise_linux_desktop | 7.0 | — |
| redhat enterprise_linux_server | 7.0 | — |
| redhat enterprise_linux_server_aus | 7.6 | — |
| redhat enterprise_linux_server_eus | 7.6 | — |
| redhat enterprise_linux_server_tus | 7.6 | — |
| redhat enterprise_linux_workstation | 7.0 | — |
| fedoraproject fedora | 28 | — |
| oracle peoplesoft_enterprise_peopletools | 8.56, 8.57 | — |
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