Vulnerability CVE-2006-1902
Published: 2006-04-20   Modified: 2012-02-12

Description:
fold_binary in fold-const.c in GNU Compiler Collection (gcc) 4.1 improperly handles pointer overflow when folding a certain expr comparison to a corresponding offset comparison in cases other than EQ_EXPR and NE_EXPR, which might introduce buffer overflow vulnerabilities into applications that could be exploited by context-dependent attackers.NOTE: the vendor states that the essence of the issue is "not correctly interpreting an offset to a pointer as a signed value."

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
GNU -> GCC 

 References:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=356896
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26763
http://gcc.gnu.org/ml/gcc-bugs/2006-04/msg01297.html
http://gcc.gnu.org/ml/gcc-bugs/2006-04/msg01298.html
http://gcc.gnu.org/viewcvs/branches/gcc-4_1-branch/gcc/fold-const.c?r1=110549&r2=112698&pathrev=112698&diff_format=h
http://www.securityfocus.com/archive/1/431184/100/0/threaded
http://www.securityfocus.com/archive/1/431245/100/0/threaded
http://www.securityfocus.com/archive/1/431297/100/0/threaded
http://www.securityfocus.com/archive/1/431319/100/0/threaded
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