Multiple heap-based buffer underflows in the readPostBody function in cgiutil.c...

Vulnerability Description

Multiple heap-based buffer underflows in the readPostBody function in cgiutil.c in mapserv in MapServer 4.x through 4.10.4 and 5.x before 5.4.2 allow remote attackers to execute arbitrary code via (1) a crafted Content-Length HTTP header or (2) a large HTTP request, related to an integer overflow that triggers a heap-based buffer overflow. NOTE: this issue reportedly exists because of an incomplete fix for CVE-2009-0840.

References

• http://www.openwall.com/lists/oss-security/2009/07/01/6
• http://security.debian.org/pool/updates/main/m/mapserver/mapserver_4.10.0-5.1+etch4.diff.gz
• http://trac.osgeo.org/mapserver/browser/tags/rel-5-4-2/mapserver/HISTORY.TXT
• http://www.openwall.com/lists/oss-security/2009/07/01/1
• http://www.debian.org/security/2009/dsa-1914
• http://trac.osgeo.org/mapserver/ticket/2943
• http://security.debian.org/pool/updates/main/m/mapserver/mapserver_5.0.3-3+lenny4.diff.gz