openSUSE Security Update : openssh (openSUSE-2017-184)

High Nessus Plugin ID 96919

Synopsis

The remote openSUSE host is missing a security update.

Description

This update for openssh fixes several issues.

These security issues were fixed :

- CVE-2016-8858: The kex_input_kexinit function in kex.c allowed remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests (bsc#1005480).

- CVE-2016-10012: The shared memory manager (associated with pre-authentication compression) did not ensure that a bounds check is enforced by all compilers, which might allowed local users to gain privileges by leveraging access to a sandboxed privilege-separation process, related to the m_zback and m_zlib data structures (bsc#1016370).

- CVE-2016-10009: Untrusted search path vulnerability in ssh-agent.c allowed remote attackers to execute arbitrary local PKCS#11 modules by leveraging control over a forwarded agent-socket (bsc#1016366).

- CVE-2016-10010: When forwarding unix domain sockets with privilege separation disabled, the resulting sockets have be created as 'root' instead of the authenticated user. Forwarding unix domain sockets without privilege separation enabled is now rejected.

- CVE-2016-10011: authfile.c in sshd did not properly consider the effects of realloc on buffer contents, which might allowed local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process (bsc#1016369).

These non-security issues were fixed :

- Adjusted suggested command for removing conflicting server keys from the known_hosts file (bsc#1006221)

- Properly verify CIDR masks in configuration (bsc#1005893 bsc#1021626)

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Solution

Update the affected openssh packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=1005480

https://bugzilla.opensuse.org/show_bug.cgi?id=1005893

https://bugzilla.opensuse.org/show_bug.cgi?id=1006221

https://bugzilla.opensuse.org/show_bug.cgi?id=1016366

https://bugzilla.opensuse.org/show_bug.cgi?id=1016368

https://bugzilla.opensuse.org/show_bug.cgi?id=1016369

https://bugzilla.opensuse.org/show_bug.cgi?id=1016370

https://bugzilla.opensuse.org/show_bug.cgi?id=1021626

Plugin Details

Severity: High

ID: 96919

File Name: openSUSE-2017-184.nasl

Version: 3.2

Type: local

Agent: unix

Published: 2017/02/01

Updated: 2019/04/10

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:openssh, p-cpe:/a:novell:opensuse:openssh-askpass-gnome, p-cpe:/a:novell:opensuse:openssh-askpass-gnome-debuginfo, p-cpe:/a:novell:opensuse:openssh-cavs, p-cpe:/a:novell:opensuse:openssh-debuginfo, p-cpe:/a:novell:opensuse:openssh-debugsource, p-cpe:/a:novell:opensuse:openssh-fips, p-cpe:/a:novell:opensuse:openssh-helpers, p-cpe:/a:novell:opensuse:openssh-helpers-debuginfo, cpe:/o:novell:opensuse:42.2

Required KB Items: Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/01/31

Reference Information

CVE: CVE-2016-10009, CVE-2016-10010, CVE-2016-10011, CVE-2016-10012, CVE-2016-8858