Vulnerability Description
The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted SSH packet.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libssh | Libssh | <= 0.6.4 |
| Canonical | Ubuntu Linux | 12.04 |
| Debian | Debian Linux | 7.0 |
| Fedoraproject | Fedora | 21 |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161802.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158013.html
- http://www.debian.org/security/2016/dsa-3488
- http://www.ubuntu.com/usn/USN-2912-1
- https://git.libssh.org/projects/libssh.git/commit/?h=libssh-0.6.5&id=94f6955fbae
- https://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/Vendor Advisory
- https://www.libssh.org/security/advisories/CVE-2015-3146.txtVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161802.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158013.html
- http://www.debian.org/security/2016/dsa-3488
- http://www.ubuntu.com/usn/USN-2912-1
- https://git.libssh.org/projects/libssh.git/commit/?h=libssh-0.6.5&id=94f6955fbae
- https://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/Vendor Advisory
- https://www.libssh.org/security/advisories/CVE-2015-3146.txtVendor Advisory
FAQ
What is CVE-2015-3146?
CVE-2015-3146 is a vulnerability with a CVSS score of 7.5 (HIGH). The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (N...
How severe is CVE-2015-3146?
CVE-2015-3146 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-3146?
Check the references section above for vendor advisories and patch information. Affected products include: Libssh Libssh, Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora.