8.8

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.

Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Libssh2 ≫ Libssh2 Version >= 1.2.8 <= 1.8.0
Debian ≫ Debian Linux Version8.0
Debian ≫ Debian Linux Version9.0
Opensuse ≫ Leap Version15.0
Opensuse ≫ Leap Version42.3
Redhat ≫ Enterprise Linux Version8.0 SwEditionadvanced_virtualization
Fedoraproject ≫ Fedora Version28
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 3.34% 0.868
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd@nist.gov 6.8 8.6 6.4
AV:N/AC:M/Au:N/C:P/I:P/A:P
secalert@redhat.com 7.5 1.6 5.9
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-190 Integer Overflow or Wraparound

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.

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://seclists.org/bugtraq/2019/Apr/25
Third Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3857
Patch
Third Party Advisory
Issue Tracking