8.1

CVE-2019-13115

Exploit

In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.

Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Libssh2Libssh2 Version < 1.9.0
DebianDebian Linux Version8.0
DebianDebian Linux Version9.0
FedoraprojectFedora Version29
FedoraprojectFedora Version30
NetappCloud Backup Version-
NetappE-series Santricity Os Controller Version >= 11.0.0 <= 11.70.1
F5Traffix Systems Signaling Delivery Controller Version >= 5.0.0 <= 5.1.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 42.82% 0.974
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.1 2.8 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
nvd@nist.gov 5.8 8.6 4.9
AV:N/AC:M/Au:N/C:P/I:N/A:P
CWE-125 Out-of-bounds Read

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

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.

https://github.com/libssh2/libssh2/pull/350
Third Party Advisory
Issue Tracking
https://libssh2.org/changes.html
Vendor Advisory
Release Notes