Off-by-one error in the process_cgivars function in contrib/daemonchk.c in Nagios Core 3.5.1, 4.0.2, and earlier allows remote authenticated users to obtain sensitive information from process memory or cause a denial of service (crash) via a long string in the last key value in the variable list, which triggers a heap-based buffer over-read.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/64489 | vdb entry |
| http://www.mandriva.com/security/advisories?name=MDVSA-2014:004 | vendor advisory |
| http://sourceforge.net/p/nagios/nagioscore/ci/d97e03f32741a7d851826b03ed73ff4c9612a866/ | |
| https://lists.debian.org/debian-lts-announce/2018/12/msg00014.html | mailing list |
| http://www.openwall.com/lists/oss-security/2013/12/24/1 | mailing list |
| http://secunia.com/advisories/55976 | third party advisory vendor advisory |