CVE-2019-3855
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 packets are read from the server. 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 21, 2019
First seenMar 21, 2019
Weakness typeCWE-190Integer overflowCWE-787Out-of-bounds write
How to fix
Update
- libssh2 libssh21.8.1 or later
- apple xcode11.0 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
- 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
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
- access.redhat.com/errata/RHSA-2019:2399
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libssh2 libssh2 | v < 1.8.1 | 1.8.1 |
| fedoraproject fedora | 28, 29, 30 | — |
| debian debian_linux | 8.0, 9.0 | — |
| netapp ontap_select_deploy_administration_utility | No range specified | — |
| 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 | — |
| opensuse leap | 42.3 | — |
| apple xcode | v < 11.0 | 11.0 |
| oracle peoplesoft_enterprise_peopletools | 8.56, 8.57 | — |
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