Vulnerability Name:

CVE-2012-0943 (CCN-73998)

Assigned:2012-03-13
Published:2012-03-13
Updated:2014-05-30
Summary:debian/guest-account in Light Display Manager (lightdm) 1.0.x before 1.0.6 and 1.1.x before 1.1.7, as used in Ubuntu Linux 11.10, allows local users to delete arbitrary files via a space in the name of a file in /tmp.
Note: this identifier was SPLIT per ADT1/ADT2 due to different codebases and affected versions. CVE-2012-6648 has been assigned for the gdm-guest-session issue.
CVSS v3 Severity:5.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
1.8 Low (Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P/E:H/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
3.6 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:P)
3.1 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:P/E:H/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-264
Vulnerability Consequences:File Manipulation
References:Source: MITRE
Type: CNA
CVE-2012-0943

Source: CCN
Type: freedesktop.org Web site
freedesktop.org - Software/LightDM

Source: CCN
Type: OSVDB ID: 80033
gdm-guest-session guest-session-cleanup.sh Guest Session Temporary File Cleaning Arbitrary File Deletion

Source: CCN
Type: BID-52452
LightDM Arbitrary File Deletion Vulnerability

Source: UBUNTU
Type: Patch, Vendor Advisory
USN-1399-2

Source: CCN
Type: USN-1399-2
Light Display Manager vulnerability

Source: CONFIRM
Type: UNKNOWN
https://bugs.launchpad.net/ubuntu/%2Bsource/lightdm/%2Bbug/953044

Source: XF
Type: UNKNOWN
lightdm-file-deletion(73998)

Source: MISC
Type: UNKNOWN
https://launchpadlibrarian.net/96471251/lightdm.secure-cleanup.debdiff

Vulnerable Configuration:Configuration 1:
  • cpe:/a:robert_ancell:lightdm:1.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.0.2:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.0.3:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.0.4:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.0.5:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.1.1:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.1.2:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.1.3:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.1.4:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.1.5:*:*:*:*:*:*:*
  • OR cpe:/a:robert_ancell:lightdm:1.1.6:*:*:*:*:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:15279
    P
    		USN-1399-1 -- gdm-guest-session vulnerability
    2014-06-30
    oval:org.mitre.oval:def:15427
    P
    		USN-1399-2 -- Light Display Manager vulnerability
    2014-06-30
    oval:com.ubuntu.precise:def:20120943000
    V
    		CVE-2012-0943 on Ubuntu 12.04 LTS (precise) - medium.
    2014-05-22
    BACK
    robert_ancell lightdm 1.0.0
    robert_ancell lightdm 1.0.1
    robert_ancell lightdm 1.0.2
    robert_ancell lightdm 1.0.3
    robert_ancell lightdm 1.0.4
    robert_ancell lightdm 1.0.5
    robert_ancell lightdm 1.1.0
    robert_ancell lightdm 1.1.1
    robert_ancell lightdm 1.1.2
    robert_ancell lightdm 1.1.3
    robert_ancell lightdm 1.1.4
    robert_ancell lightdm 1.1.5
    robert_ancell lightdm 1.1.6
    canonical ubuntu linux 11.10