Secunia Security Advisory - A security issue has been discovered in PHP, which can be exploited by malicious users and malicious people to potentially disclose sensitive information.
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TITLE:
PHP "mb_strcut()" Information Disclosure Security Issue
SECUNIA ADVISORY ID:
SA42135
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42135/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42135
RELEASE DATE:
2010-11-09
DISCUSS ADVISORY:
http://secunia.com/advisories/42135/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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* Impact
* Where
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* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/42135/
ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42135
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
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http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION:
A security issue has been discovered in PHP, which can be exploited
by malicious users and malicious people to potentially disclose
sensitive information.
The security issue is caused due to an input validation error in
"mbfl_strcut()" in ext/mbstring/libmbfl/mbfl/mbfilter.c, which can be
exploited to disclose potentially sensitive memory by passing an
overly large "length" parameter to the "mb_strcut()" PHP function.
Successful exploitation from remote depends on the application using
the library function.
The security issue is confirmed in version 5.3.3. Other versions may
also be affected.
SOLUTION:
Ensure that parameters passed to "mb_strcut()" are properly validated
and grant only trusted users permissions to invoke "mb_strcut()".
PROVIDED AND/OR DISCOVERED BY:
Mateusz Kocielski
ORIGINAL ADVISORY:
http://marc.info/?l=oss-security&m=128916137005024&w=2
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
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