[Bug 215721] bsnmpwalk .1 spews out an uninitialized stream for an OID

2017-11-05 Thread bugzilla-noreply 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215721

Ngie Cooper  changed:

   What|Removed |Added

   Assignee|n...@freebsd.org|freebsd-bugs@FreeBSD.org

-- 
You are receiving this mail because:
You are the assignee for the bug.
___
freebsd-bugs@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-bugs
To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"

[Bug 215721] bsnmpwalk .1 spews out an uninitialized stream for an OID

2017-01-02 Thread bugzilla-noreply 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215721

Ngie Cooper  changed:

   What|Removed |Added

   Assignee|freebsd-bugs@FreeBSD.org|n...@freebsd.org

-- 
You are receiving this mail because:
You are the assignee for the bug.
___
freebsd-bugs@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-bugs
To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"

[Bug 215721] bsnmpwalk .1 spews out an uninitialized stream for an OID

2017-01-02 Thread bugzilla-noreply 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215721

Bug ID: 215721
   Summary: bsnmpwalk .1 spews out an uninitialized stream for an
OID
   Product: Base System
   Version: CURRENT
  Hardware: Any
OS: Any
Status: New
  Severity: Affects Some People
  Priority: ---
 Component: bin
  Assignee: freebsd-bugs@FreeBSD.org
  Reporter: n...@freebsd.org

.1 is a common alias for the `iso` OID root. Unfortunately bsnmpwalk doesn't
like that -- in particular it claims the OID is too short and spews out a
stream of uninitialized memory. Example:

% bsnmpwalk .1 2>&1 | less
ASN.1: short oid at a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 a5 a5 ...
ASN.1: short oid at a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
...
bsnmpwalk: Snmp dialog: Invalid argument
%

valgrind claimed it was something to do with uninitialized heap space being
passed to asn_put_objid(..) from snmp_dialog(..):

ASN.1: short oid at==79003== Use of uninitialised value of size 8
==79003==at 0x5343CA5: ??? (in /lib/libc.so.7)
==79003==by 0x5341BB1: ??? (in /lib/libc.so.7)
==79003==by 0x5341A12: vfprintf_l (in /lib/libc.so.7)
==79003==by 0x5349F12: fprintf (in /lib/libc.so.7)
==79003==by 0x4E38D55: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E39D98: asn_put_objid (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E3800E: snmp_binding_encode (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E38198: snmp_pdu_encode (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E32593: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E300E0: snmp_dialog (in /usr/lib/libbsnmp.so.6)
==79003==by 0x402AAB: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4020DE: ??? (in /usr/bin/bsnmpwalk)
==79003==  Uninitialised value was created by a heap allocation
==79003==at 0x4C246B0: malloc (in
/usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==79003==by 0x4E32548: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E300E0: snmp_dialog (in /usr/lib/libbsnmp.so.6)
==79003==by 0x402AAB: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4020DE: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4022FFF: ???
==79003==
==79003== Conditional jump or move depends on uninitialised value(s)
==79003==at 0x5343CB4: ??? (in /lib/libc.so.7)
==79003==by 0x5341BB1: ??? (in /lib/libc.so.7)
==79003==by 0x5341A12: vfprintf_l (in /lib/libc.so.7)
==79003==by 0x5349F12: fprintf (in /lib/libc.so.7)
==79003==by 0x4E38D55: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E39D98: asn_put_objid (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E3800E: snmp_binding_encode (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E38198: snmp_pdu_encode (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E32593: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E300E0: snmp_dialog (in /usr/lib/libbsnmp.so.6)
==79003==by 0x402AAB: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4020DE: ??? (in /usr/bin/bsnmpwalk)
==79003==  Uninitialised value was created by a heap allocation
==79003==at 0x4C246B0: malloc (in
/usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==79003==by 0x4E32548: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E300E0: snmp_dialog (in /usr/lib/libbsnmp.so.6)
==79003==by 0x402AAB: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4020DE: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4022FFF: ???
==79003==

==79003== 19928 errors in context 1 of 2:
==79003== Conditional jump or move depends on uninitialised value(s)
==79003==at 0x5343CB4: ??? (in /lib/libc.so.7)
==79003==by 0x5341BB1: ??? (in /lib/libc.so.7)
==79003==by 0x5341A12: vfprintf_l (in /lib/libc.so.7)
==79003==by 0x5349F12: fprintf (in /lib/libc.so.7)
==79003==by 0x4E38D55: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E39D98: asn_put_objid (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E3800E: snmp_binding_encode (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E38198: snmp_pdu_encode (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E32593: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E300E0: snmp_dialog (in /usr/lib/libbsnmp.so.6)
==79003==by 0x402AAB: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4020DE: ??? (in /usr/bin/bsnmpwalk)
==79003==  Uninitialised value was created by a heap allocation
==79003==at 0x4C246B0: malloc (in
/usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==79003==by 0x4E32548: ??? (in /usr/lib/libbsnmp.so.6)
==79003==by 0x4E300E0: snmp_dialog (in /usr/lib/libbsnmp.so.6)
==79003==by 0x402AAB: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4020DE: ??? (in /usr/bin/bsnmpwalk)
==79003==by 0x4022FFF: ???
==79003==