Linux kernel DCCP negative optlen information disclosure
| kernel-dccp-information-disclosure (33274) |  Low Risk |
Description:
The Linux kernel could allow a local attacker to obtain sensitive information, caused by a vulnerability in the do_dccp_getsockopt function. If DCCP is enabled, a remote attacker could exploit this vulnerability using a negative optlen value to obtain sensitive information stored in the kernel memory or cause a denial of service.
*CVSS:
| Base Score: | 2.5 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Partial |
| Integrity Impact: | None |
| Availability Impact: | None |
| Temporal Score: | 2 |
| Exploitability: | Proof-Of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Obtain Information
Remedy:
For Ubuntu Linux (linux-source):
Refer to USN-464-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Full-Disclosure Mailing List, Tue Mar 27 2007 - 08:19:12 CDT: Linux Kernel DCCP Memory Disclosure Vulnerability.
- Full-Disclosure Mailing List, Tue Mar 27 2007 - 08:19:12 CDT: Linux Kernel DCCP Memory Disclosure Vulnerability.
- Linux Kernel Web site: The Linux Kernel Archives.
- BID-23162: Linux Kernel DCCP Multiple Local Information Disclosure Vulnerabilities
- CVE-2007-1730: Integer signedness error in the DCCP support in the do_dccp_getsockopt function in net/dccp/proto.c in Linux kernel 2.6.20 and later allows local users to read kernel memory or cause a denial of service (oops) via a negative optlen value.
- SECTRACK ID: 1017820: Linux Kernel do_dccp_getsockopt() Bug Discloses Kernel Memory to Local Users
- USN-464-1: Linux kernel vulnerabilities
- VUPEN/ADV-2007-1143: Linux Kernel DCCP Module do_dccp_getsockopt() Memory Disclosure Vulnerability
Platforms Affected:
- Canonical Ubuntu 6.06 LTS
- Canonical Ubuntu 6.10
- Canonical Ubuntu 7.04
- Linux Linux Kernel 2.6.20
- Linux Linux Kernel 2.6.20.1
- Linux Linux Kernel 2.6.20.2
Reported:
Mar 27, 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.