Linux kernel tcp_sacktag_write_queue() denial of service
| linux-kernel-tcpsacktagwritequeue-dos (38548) |  Medium Risk |
Description:
Linux kernel is vulnerable to a denial of service, caused by a NULL pointer dereference in the tcp_sacktag_write_queue() function. A remote attacker could send a specially-crafted ACK packet to cause the system to crash.
*CVSS:
| Base Score: | 7.8 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Complete |
| Temporal Score: | 5.8 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of Linux kernel (2.6.23.8 or later), available from The Linux Kernel Archives Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- The Linux Kernel Archives Web site: The Linux Kernel Archives.
- The Linux Kernel Archives Web site: ChangeLog-2.6.23.8 .
- BID-26474: Linux Kernel TCP_Input.C Remote Denial of Service Vulnerability
- CVE-2007-5501: The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c in Linux kernel 2.6.21 through 2.6.23.7, and 2.6.24-rc through 2.6.24-rc2, allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.
- MDKSA-2007:226: Updated kernel packages fix multiple vulnerabilities and bugs
- MDVSA-2008:044: Updated kernel packages fix multiple vulnerabilities and bugs
- SA27664: Linux Kernel Multiple Denial of Service Vulnerabilities
- SUSE-SA:2007:063: Linux kernel security problems
- SUSE-SA:2008:013: Linux kernel security problem
- USN-558-1: Linux kernel vulnerabilities
- USN-574-1: Linux kernel vulnerabilities
- VUPEN/ADV-2007-3902: Linux Kernel wait_task_stopped() and tcp_write_queue_head() Issues
Platforms Affected:
- Canonical Ubuntu 6.10
- Canonical Ubuntu 7.04
- Canonical Ubuntu 7.10
- Linux Kernel 2.6.21 rc3
- Linux Kernel 2.6.21 rc4
- Linux Kernel 2.6.21 rc6
- Linux Kernel 2.6.21 rc5
- Linux Kernel 2.6.21.6
- Linux Kernel 2.6.21.7
- Linux Kernel 2.6.22 rc7
- Linux Kernel 2.6.22.11
- Linux Kernel 2.6.22.8
- Linux Kernel 2.6.23.6
- Linux Kernel 2.6.23.7
- Linux Kernel 2.6.24 rc2
- Linux Kernel 2.6.24 rc1
- Linux Linux Kernel 2.6.21
- Linux Linux Kernel 2.6.21.1
- Linux Linux Kernel 2.6.21.2
- Linux Linux Kernel 2.6.22
- Linux Linux Kernel 2.6.22.3
- Linux Linux Kernel 2.6.22.4
- Linux Linux Kernel 2.6.22.5
- Linux Linux Kernel 2.6.22.6
- Linux Linux Kernel 2.6.23 rc2
- Linux Linux Kernel 2.6.23 rc1
- Linux Linux Kernel 2.6.23
- Linux Linux Kernel 2.6.23.1
- Linux Linux Kernel 2.6.23.2
- Linux Linux Kernel 2.6.23.3
- Linux Linux Kernel 2.6.23.4
- Linux Linux Kernel 2.6.23.5
- MandrakeSoft Mandrake Linux 2008.0
- MandrakeSoft Mandrake Linux 2008.0 X86_64
- Novell OpenSUSE 10.3
- SuSE SuSE Linux Enterprise Realtime 10 SP1
Reported:
Nov 16, 2007
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.