Vulnerability Name:

CVE-2017-8217 (CCN-125420)

Assigned:2017-04-25
Published:2017-04-25
Updated:2020-08-24
Summary:TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n have too permissive iptables rules, e.g., SNMP is not blocked on any interface.
CVSS v3 Severity:5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-862
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2017-8217

Source: CCN
Type: TP-Link Web site
TP-Link C2 and C20i

Source: XF
Type: UNKNOWN
tplink-cve20178217-weak-security(125420)

Source: CCN
Type: Pierre Kim Web site
TP-Link C2 and C20i vulnerable to command injection (authenticated root RCE), DoS, improper firewall rules

Source: MISC
Type: Exploit, Technical Description, Third Party Advisory
https://pierrekim.github.io/blog/2017-02-09-tplink-c2-and-c20i-vulnerable.html

Vulnerable Configuration:Configuration 1:
  • cpe:/o:tp-link:c2_firmware:*:rel.37961n:*:*:*:*:*:* (Version <= 0.9.1_4.2_v0032.0_build_160706)
  • AND
  • cpe:/h:tp-link:c2:-:*:*:*:*:*:*:*

  • Configuration 2:
  • cpe:/o:tp-link:c20i_firmware:*:rel.37961n:*:*:*:*:*:* (Version <= 0.9.1_4.2_v0032.0_build_160706)
  • AND
  • cpe:/h:tp-link:c20i:-:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    tp-link c2 firmware * rel.37961n
    tp-link c2 -
    tp-link c20i firmware * rel.37961n
    tp-link c20i -