CVE-2015-3146

Severity

50%

Complexity

99%

Confidentiality

48%

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.

CWE-476: NULL Pointer Dereference

CVSS 3.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P).

Overview

First reported 9 years ago

2016-04-13 17:59:00

Last updated 9 years ago

2016-04-20 15:07:00

Affected Software

Canonical Ubuntu Linux 12.04 LTS

12.04

Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)

14.04

Canonical Ubuntu Linux 15.10

15.10

Debian Linux 7.0

7.0

Debian Linux 8.0 (Jessie)

8.0

Fedora 21

21

Fedora 22

22

References

FEDORA-2015-10962

FEDORA-2015-7590

DSA-3488

USN-2912-1

https://git.libssh.org/projects/libssh.git/commit/?h=libssh-0.6.5&id=94f6955fbaee6fda9385a23e505497efe21f5b4f

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.txt