CVE-2019-3856
Published: August 31, 2023Last modified: August 31, 2023
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 keyboard prompt requests 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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libssh2 | Not affected (1.10.0-r4) |
| Stream | libssh2 | Not affected (1.11.0-r0) |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
- https://access.redhat.com/errata/RHSA-2019:0679
- https://access.redhat.com/errata/RHSA-2019:1175
- https://access.redhat.com/errata/RHSA-2019:1652
- https://access.redhat.com/errata/RHSA-2019:1791
- https://access.redhat.com/errata/RHSA-2019:1943
- https://access.redhat.com/errata/RHSA-2019:2399
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3856
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- https://seclists.org/bugtraq/2019/Apr/25
- https://security.netapp.com/advisory/ntap-20190327-0005/
- https://www.debian.org/security/2019/dsa-4431
- https://www.libssh2.org/CVE-2019-3856.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html