Vulnerability Details : 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 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.
Vulnerability category: OverflowMemory CorruptionExecute code
Products affected by CVE-2019-3857
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.56:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
- cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-3857
0.29%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 68 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-3857
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
Red Hat, Inc. | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2019-3857
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2019-3857
-
https://access.redhat.com/errata/RHSA-2019:1652
RHSA-2019:1652 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://security.netapp.com/advisory/ntap-20190327-0005/
March 2019 Libssh2 Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
[security-announce] openSUSE-SU-2019:1109-1: moderate: Security update fThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:1175
RHSA-2019:1175 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
Page not found | OraclePatch;Third Party Advisory
-
https://www.debian.org/security/2019/dsa-4431
Debian -- Security Information -- DSA-4431-1 libssh2Third Party Advisory
-
https://seclists.org/bugtraq/2019/Apr/25
Bugtraq: [SECURITY] [DSA 4431-1] libssh2 security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:1943
RHSA-2019:1943 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:0679
RHSA-2019:0679 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3857
1687305 – (CVE-2019-3857) CVE-2019-3857 libssh2: Integer overflow in SSH packet processing channel resulting in out of bounds writeIssue Tracking;Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
[SECURITY] [DLA 1730-1] libssh2 security updateThird Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
[security-announce] openSUSE-SU-2019:1075-1: moderate: Security update fMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
[SECURITY] Fedora 28 Update: libssh2-1.8.1-1.fc28 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://www.libssh2.org/CVE-2019-3857.html
libssh2 Security Advisory: CVE-2019-3857Patch;Vendor Advisory
-
https://access.redhat.com/errata/RHSA-2019:2399
RHSA-2019:2399 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:1791
RHSA-2019:1791 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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