Vulnerability Details : CVE-2019-13115
Potential 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.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2019-13115
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- F5 » Traffix Systems Signaling Delivery ControllerVersions from including (>=) 5.0.0 and up to, including, (<=) 5.1.0cpe:2.3:a:f5:traffix_systems_signaling_delivery_controller:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
- Netapp » E-series Santricity Os ControllerVersions from including (>=) 11.0.0 and up to, including, (<=) 11.70.1cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
- cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-13115
0.26%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 65 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-13115
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:P |
8.6
|
4.9
|
NIST | |
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
2.8
|
5.2
|
NIST |
CWE ids for CVE-2019-13115
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
-
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)
References for CVE-2019-13115
-
https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html
[SECURITY] [DLA 1730-3] libssh2 regression updateMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
[SECURITY] [DLA 2848-1] libssh2 security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
[SECURITY] Fedora 30 Update: libssh2-1.9.0-1.fc30 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
Mailing List;Third Party Advisory
-
http://packetstormsecurity.com/files/172834/libssh2-1.8.2-Out-Of-Bounds-Read.html
libssh2 1.8.2 Out-Of-Bounds Read ≈ Packet Storm
-
https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
[SECURITY] [DLA 3559-1] libssh2 security update
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
[SECURITY] Fedora 29 Update: libssh2-1.9.0-1.fc29 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://support.f5.com/csp/article/K13322484?utm_source=f5support&utm_medium=RSS
Third Party Advisory
-
https://github.com/libssh2/libssh2/pull/350
Simplified _libssh2_check_length by willco007 · Pull Request #350 · libssh2/libssh2 · GitHubIssue Tracking;Third Party Advisory
-
https://blog.semmle.com/libssh2-integer-overflow/
libssh2 integer overflows and an out-of-bounds read (CVE-2019-13115) | Semmle BlogExploit;Third Party Advisory
-
https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa
Comparing 02ecf17...42d37aa · libssh2/libssh2 · GitHubThird Party Advisory
-
https://security.netapp.com/advisory/ntap-20190806-0002/
CVE-2019-13115 Libssh2 Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://libssh2.org/changes.html
libssh2Release Notes;Vendor Advisory
-
https://support.f5.com/csp/article/K13322484
Third Party Advisory
-
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
[GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 - Pony MailMailing List;Third Party Advisory
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