RPM 4.4.x through 4.9.x, probably before 4.9.1.2, allows remote attackers to cause a denial of service (memory corruption) and possibly execute arbitrary code via an rpm package with crafted headers and offsets that are not properly handled when a package is queried or installed, related to (1) the regionSwab function, (2) the headerLoad function, and (3) multiple functions in rpmio/rpmpgp.c.
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10691
http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00002.html
https://bugzilla.redhat.com/show_bug.cgi?id=741606
https://bugzilla.redhat.com/show_bug.cgi?id=741612
http://www.mandriva.com/security/advisories?name=MDVSA-2011:143
http://www.openwall.com/lists/oss-security/2011/09/27/3