Vulnerability in Libssh
CVE-2015-3146
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.
EPSS: 0.039 (89.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Libssh
- Canonical Ubuntu_linux — versions 12.04, 14.04, 15.10
- Debian Debian_linux — versions 7.0, 8.0
- Fedoraproject Fedora — versions 21, 22
- N/a — versions n/a
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
- secalert@redhat.com (vendor-advisory, x_refsource_FEDORA)
- secalert@redhat.com (x_refsource_CONFIRM, Vendor Advisory)
- secalert@redhat.com (vendor-advisory, x_refsource_FEDORA)
- secalert@redhat.com (x_refsource_CONFIRM, Vendor Advisory)
- secalert@redhat.com (vendor-advisory, x_refsource_DEBIAN)
- secalert@redhat.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2015-3146?
- CVE-2015-3146 is a high-severity vulnerability in Libssh. CVSS score: 7.5/10. Published 2016-04-13.
- How severe is CVE-2015-3146?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-3146 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.