Immunix StackGuard buffer overflow
| immunix-stackguard-bo (3524) |  High Risk |
Description:
Immunix StackGuard contains a buffer overflow that could allow attackers to read and write memory addresses. A local attacker could overflow StackGuard changing the value of the char * p pointer to point to anywhere in memory. It is possible for the attacker to take input and store it where p points.
Consequences:
Bypass Security
Remedy:
Upgrade to StackGuard 1.21 available from the Immunix Web site. See References.
References:
- ImmuniX OS Security Alert Immunix-1999:01: StackGuard vulnerability found & fixed.
- Immunix Web site: Immunix Downloads.
- BID-786: Immunix StackGuard Evasion Vulnerability
- CVE-1999-1111: Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.
Platforms Affected:
- WireX Communications StackGuard pre 1.21
Reported:
Nov 08, 1999
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 the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net