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"From 2007 to 2009 vulnerabilities in a typical end-user PC almost doubled from about 220 to 420."

Non-Microsoft software to blame for increase in vulnerabilities affecting typical Windows end-users, read more:

http://secunia.com/gfx/pdf/Secunia_Half_Year_Report_2010.pdf


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TITLE:
OpenLDAP "modrdn" Two Vulnerabilities

SECUNIA ADVISORY ID:
SA40639

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40639/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40639

RELEASE DATE:
2010-07-19

DISCUSS ADVISORY:
http://secunia.com/advisories/40639/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/40639/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
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 * Secunia CVSS Score
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https://ca.secunia.com/?page=viewadvisory&vuln_id=40639

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Two vulnerabilities have been discovered in OpenLDAP, which can be
exploited by malicious people to cause a DoS (Denial of Service) and
potentially compromise a vulnerable system.

1) The "slap_modrdn2mods()" function in servers/slapd/modrdn.c does
not check the return value of a call to "smr_normalize()". This can
be exploited to free an uninitialised pointer and corrupt memory via
an LDAP "modrdn" request containing a specially crafted "rdn"
string.

2) An error exists in the processing of LDAP "modrdn" requests, which
can be exploited to cause a NULL pointer dereference error in
"IA5StringNormalize()" in servers/slapd/schema_init.c and crash the
service via a specially crafted "rdn" string.

The vulnerabilities are confirmed in version 2.4.22. Prior versions
may also be affected.

SOLUTION:
Update to version 2.4.23.

PROVIDED AND/OR DISCOVERED BY:
Ilkka Mattila and Tuomas Salomäki using the Codenomicon LDAPv3 test
suite.

ORIGINAL ADVISORY:
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6570

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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About:
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