Vulnerability Name:

CVE-2015-1344 (CCN-109421)

Assigned:2015-11-13
Published:2015-11-13
Updated:2015-12-08
Summary:The do_write_pids function in lxcfs.c in LXCFS before 0.12 does not properly check permissions, which allows local users to gain privileges by writing a pid to the tasks file.
CVSS v3 Severity:5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
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): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-264
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2015-1344

Source: UBUNTU
Type: UNKNOWN
USN-2813-1

Source: CONFIRM
Type: UNKNOWN
https://bugs.launchpad.net/ubuntu/+source/lxcfs/+bug/1512854

Source: XF
Type: UNKNOWN
lxcfs-cve20151344-priv-esc(109421)

Source: CCN
Type: LXCFS GIT Repository
Implement privilege check when moving tasks

Source: CONFIRM
Type: UNKNOWN
https://github.com/lxc/lxcfs/commit/8ee2a503e102b1a43ec4d83113dc275ab20a869a

Vulnerable Configuration:Configuration 1:
  • cpe:/o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:canonical:lxcfs:*:*:*:*:*:*:*:* (Version <= 0.11)

    • * Denotes that component is vulnerable
    BACK
    canonical ubuntu linux 15.04
    canonical ubuntu linux 15.10
    canonical lxcfs *