The proc filesystem implementation in the Linux kernel 2.6.37 and...

Vulnerability Description

The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a process after this process performs an exec of a setuid program, which allows local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write system calls.

References

• https://exchange.xforce.ibmcloud.com/vulnerabilities/65693
• http://securityreason.com/securityalert/8107
• http://secunia.com/advisories/43496
• http://openwall.com/lists/oss-security/2011/02/24/18
• https://lkml.org/lkml/2011/2/7/466
• http://openwall.com/lists/oss-security/2011/02/25/2
• https://lkml.org/lkml/2011/2/7/414
• https://lkml.org/lkml/2011/2/10/21
• http://www.securityfocus.com/bid/46567
• https://lkml.org/lkml/2011/2/7/368
• https://lkml.org/lkml/2011/2/9/417
• https://lkml.org/lkml/2011/2/7/474
• https://lkml.org/lkml/2011/2/7/404
• http://seclists.org/fulldisclosure/2011/Jan/421
• http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/