CVE-2019-13115: Integer Overflow
First published: Tue Jul 16 2019(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libssh2 Libssh2 | <1.9.0 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Fedoraproject Fedora | =29 | |
| Fedoraproject Fedora | =30 | |
| Netapp Cloud Backup | ||
| NetApp E-Series SANtricity OS Controller | >=11.0.0<=11.70.1 | |
| NetApp ONTAP Select Deploy administration utility | ||
| F5 Traffix Systems Signaling Delivery Controller | >=5.0.0<=5.1.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://packetstormsecurity.com/files/172834/libssh2-1.8.2-Out-Of-Bounds-Read.html
- https://blog.semmle.com/libssh2-integer-overflow/
- https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa
- https://github.com/libssh2/libssh2/pull/350
- https://libssh2.org/changes.html
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
- https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
- https://security.netapp.com/advisory/ntap-20190806-0002/
- https://support.f5.com/csp/article/K13322484
- https://support.f5.com/csp/article/K13322484?utm_source=f5support&utm_medium=RSS
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
- https://support.f5.com/csp/article/K13322484?utm_source=f5support&%3Butm_medium=RSS
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2019-13115.
What is the severity of CVE-2019-13115?
The severity of CVE-2019-13115 is high with a CVSS score of 8.1.
How does CVE-2019-13115 affect Libssh2?
CVE-2019-13115 affects Libssh2 versions before 1.9.0 and could lead to an out-of-bounds read in the way packets are read from the server, potentially disclosing sensitive information.
Which software versions are affected by CVE-2019-13115?
CVE-2019-13115 affects Libssh2 versions before 1.9.0, Debian Linux versions 8.0 and 9.0, Fedora versions 29 and 30, Netapp Cloud Backup, NetApp E-Series SANtricity OS Controller versions between 11.0.0 and 11.70.1, and NetApp ONTAP Select Deploy administration utility.
How can I fix CVE-2019-13115?
To fix CVE-2019-13115, it is recommended to update to Libssh2 version 1.9.0 or later.
- collector/nvd-api
- collector/nvd-index
- agent/severity
- agent/references
- agent/weakness
- agent/author
- agent/type
- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/libssh2
- canonical/libssh2 libssh2
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- version/debian debian linux/9.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/29
- version/fedoraproject fedora/30
- vendor/netapp
- canonical/netapp cloud backup
- canonical/netapp e-series santricity os controller
- version/netapp e-series santricity os controller/11.0.0
- version/netapp e-series santricity os controller/11.70.1
- canonical/netapp ontap select deploy administration utility
- vendor/f5
- canonical/f5 traffix systems signaling delivery controller
- version/f5 traffix systems signaling delivery controller/5.0.0
- version/f5 traffix systems signaling delivery controller/5.1.0