Secunia Security Advisory - A vulnerability has been reported in CUPS, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.
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TITLE:
CUPS SNMP Backend "asn1_get_string()" Signedness Vulnerability
SECUNIA ADVISORY ID:
SA28129
VERIFY ADVISORY:
http://secunia.com/advisories/28129/
CRITICAL:
Moderately critical
IMPACT:
DoS, System access
WHERE:
>From local network
SOFTWARE:
CUPS 1.x
http://secunia.com/product/921/
DESCRIPTION:
A vulnerability has been reported in CUPS, which can be exploited by
malicious people to cause a DoS (Denial of Service) or potentially
compromise a vulnerable system.
The vulnerability is caused due to a signedness error within the
"asn1_get_string()" function in backend/snmp.c. This can be exploited
to cause a stack-based buffer overflow via specially crafted SNMP
responses containing ASN1 encoded strings with negative length
values.
Successful exploitation on 1.3.x versions requires that the snmp
backend is configured in snmp.conf.
The vulnerability is reported in 1.2.x and 1.3.x versions prior to
1.3.5.
SOLUTION:
Update to version 1.3.5.
PROVIDED AND/OR DISCOVERED BY:
The vendor credits Wei Wang of McAfee AVERT Research.
ORIGINAL ADVISORY:
http://www.cups.org/str.php?L2589
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