Detections
Analytics
Ubuntu 5.04 / 5.10 / 6.06 LTS : openssh vulnerabilities (USN-355-1)
high Nessus Plugin ID 27935
Synopsis
The remote Ubuntu host is missing one or more security-related patches.Description
Tavis Ormandy discovered that the SSH daemon did not properly handle authentication packets with duplicated blocks. By sending specially crafted packets, a remote attacker could exploit this to cause the ssh daemon to drain all available CPU resources until the login grace time expired. (CVE-2006-4924)Mark Dowd discovered a race condition in the server's signal handling.
A remote attacker could exploit this to crash the server.
(CVE-2006-5051).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Update the affected packages.See Also
Plugin Details
Severity: High
ID: 27935
File Name: ubuntu_USN-355-1.nasl
Version: 1.18
Type: local
Agent: unix
Family: Ubuntu Local Security Checks
Published: 11/10/2007
Updated: 1/19/2021
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 9.3
Temporal Score: 7.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: cpe:/o:canonical:ubuntu_linux:5.04, p-cpe:/a:canonical:ubuntu_linux:openssh-client, p-cpe:/a:canonical:ubuntu_linux:ssh, cpe:/o:canonical:ubuntu_linux:5.10, cpe:/o:canonical:ubuntu_linux:6.06:-:lts, p-cpe:/a:canonical:ubuntu_linux:openssh-server, p-cpe:/a:canonical:ubuntu_linux:ssh-askpass-gnome
Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 10/2/2006
Reference Information
CVE: CVE-2006-4924, CVE-2006-5051, CVE-2008-4109
BID: 20216