High severity · published Jul 16, 2019
CVE-2019-13115
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…
8.1
CVSS
11.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)11.7% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
ES
E-series Santricity OS Controller · Netapp
11.0.0 through 11.70.1 · source: NVD
FE
Fedora · Fedoraproject
29; 30 · source: NVD
LI
Libssh2 · Libssh2
before 1.9.0 · source: NVD
OS
Ontap Select Deploy Administration Utility · Netapp
All versions, or not specified · source: NVD
TS
Traffix Systems Signaling Delivery Controller · F5
5.0.0 through 5.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-13115
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-13115
packetstormsecurity.com
http://packetstormsecurity.com/files/172834/libssh2-1.8.2-Out-Of-Bounds-Read.html
Exploit
https://blog.semmle.com/libssh2-integer-overflow/
Third Party Advisory
https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa
Issue Tracking
https://github.com/libssh2/libssh2/pull/350
Release Notes
https://libssh2.org/changes.html
lists.apache.org
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
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