Ubuntu 6.06 LTS / 8.04 LTS / 9.04 / 9.10 : krb5 vulnerabilities (USN-940-1)

critical Nessus Plugin ID 46688


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VPR Score: 6.7


The remote Ubuntu host is missing one or more security-related patches.


It was discovered that Kerberos did not correctly free memory in the GSSAPI and kdb libraries. If a remote attacker were able to manipulate an application using these libraries carefully, the service could crash, leading to a denial of service. (Only Ubuntu 6.06 LTS was affected.) (CVE-2007-5902, CVE-2007-5971, CVE-2007-5972)

Joel Johnson, Brian Almeida, and Shawn Emery discovered that Kerberos did not correctly verify certain packet structures. An unauthenticated remote attacker could send specially crafted traffic to cause the KDC or kadmind services to crash, leading to a denial of service.
(CVE-2010-1320, CVE-2010-1321).

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.


Update the affected packages.

See Also


Plugin Details

Severity: Critical

ID: 46688

File Name: ubuntu_USN-940-1.nasl

Version: 1.18

Type: local

Agent: unix

Published: 5/20/2010

Updated: 9/19/2019

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Critical

VPR Score: 6.7

CVSS v2.0

Base Score: 10

Temporal Score: 7.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:krb5-admin-server, p-cpe:/a:canonical:ubuntu_linux:krb5-clients, p-cpe:/a:canonical:ubuntu_linux:krb5-doc, p-cpe:/a:canonical:ubuntu_linux:krb5-ftpd, p-cpe:/a:canonical:ubuntu_linux:krb5-kdc, p-cpe:/a:canonical:ubuntu_linux:krb5-kdc-ldap, p-cpe:/a:canonical:ubuntu_linux:krb5-pkinit, p-cpe:/a:canonical:ubuntu_linux:krb5-rsh-server, p-cpe:/a:canonical:ubuntu_linux:krb5-telnetd, p-cpe:/a:canonical:ubuntu_linux:krb5-user, p-cpe:/a:canonical:ubuntu_linux:libgssapi-krb5-2, p-cpe:/a:canonical:ubuntu_linux:libgssrpc4, p-cpe:/a:canonical:ubuntu_linux:libk5crypto3, p-cpe:/a:canonical:ubuntu_linux:libkadm55, p-cpe:/a:canonical:ubuntu_linux:libkadm5clnt6, p-cpe:/a:canonical:ubuntu_linux:libkadm5srv6, p-cpe:/a:canonical:ubuntu_linux:libkdb5-4, p-cpe:/a:canonical:ubuntu_linux:libkrb5-3, p-cpe:/a:canonical:ubuntu_linux:libkrb5-dbg, p-cpe:/a:canonical:ubuntu_linux:libkrb5-dev, p-cpe:/a:canonical:ubuntu_linux:libkrb53, p-cpe:/a:canonical:ubuntu_linux:libkrb5support0, cpe:/o:canonical:ubuntu_linux:6.06:-:lts, cpe:/o:canonical:ubuntu_linux:8.04:-:lts, cpe:/o:canonical:ubuntu_linux:9.04, cpe:/o:canonical:ubuntu_linux:9.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/19/2010

Vulnerability Publication Date: 12/5/2007

Reference Information

CVE: CVE-2007-5902, CVE-2007-5971, CVE-2007-5972, CVE-2010-1320, CVE-2010-1321

BID: 26750, 39599

USN: 940-1

CWE: 119, 189, 399