Vulnerability Name:

CVE-2007-3720 (CCN-35898)

Assigned:2007-07-11
Published:2007-07-11
Updated:2008-11-15
Summary:The process scheduler in the Linux kernel 2.4 performs scheduling based on CPU billing gathered from periodic process sampling ticks, which allows local users to cause a denial of service (CPU consumption) by performing voluntary nanosecond sleeps that result in the process not being active during a clock interrupt, as described in "Secretly Monopolizing the CPU Without Superuser Privileges."
CVSS v3 Severity:6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
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): None
Availibility (A): High
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
1.7 Low (Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:U/RC:UR)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
4.0 Medium (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:U/RC:UR)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-Other
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2007-3720

Source: OSVDB
Type: UNKNOWN
37126

Source: CCN
Type: Cheat07Security Whitepaper
Secretly Monopolizing the CPU Without Superuser Privileges

Source: MISC
Type: UNKNOWN
http://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf

Source: CCN
Type: Linux Kernel Web site
The Linux Kernel Archives

Source: CCN
Type: OSVDB ID: 37126
Linux Kernel Process Scheduler Nanosecond Sleep Clock Interruption Local DoS

Source: XF
Type: UNKNOWN
kernel-processsheduler-ticks-dos(35898)

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:2.4.0:-:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:2.4.0:-:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    linux linux kernel 2.4.0
    linux linux kernel 2.4.0