Vulnerability Name:

CVE-2021-27239 (CCN-197375)

Assigned:2021-02-24
Published:2021-02-24
Updated:2021-04-02
Summary:This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400 and R6700 firmware version 1.0.4.98 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the upnpd service, which listens on UDP port 1900 by default. A crafted MX header field in an SSDP message can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11851.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:8.3 High (CVSS v2 Vector: AV:A/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
8.3 High (CCN CVSS v2 Vector: AV:A/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-121
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-27239

Source: XF
Type: UNKNOWN
netgear-cve202127239-bo(197375)

Source: CCN
Type: NETGEAR Security Advisory: 000062820
ecurity Advisory for Stack-based Buffer Overflow Remote Code Execution Vulnerability on Some Routers

Source: N/A
Type: Vendor Advisory
N/A

Source: CCN
Type: ZDI-21-206
NETGEAR Multiple Routers SSDP Stack-based Buffer Overflow Remote Code Execution Vulnerability

Source: N/A
Type: Third Party Advisory, VDB Entry
N/A

Vulnerable Configuration:Configuration 1:
  • cpe:/o:netgear:d6220_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.68)
  • AND
  • cpe:/h:netgear:d6220:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:netgear:d6400_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.102)
  • AND
  • cpe:/h:netgear:d6400:-:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:netgear:d7000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.66)
  • AND
  • cpe:/h:netgear:d7000:v2:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:netgear:d8500_firmware:*:*:*:*:*:*:*:* (Version < 1.0.3.60)
  • AND
  • cpe:/h:netgear:d8500:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:netgear:dc112a_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.54)
  • AND
  • cpe:/h:netgear:dc112a:-:*:*:*:*:*:*:*

    • Configuration 6:
  • cpe:/o:netgear:ex7000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.94)
  • AND
  • cpe:/h:netgear:ex7000:-:*:*:*:*:*:*:*

    • Configuration 7:
  • cpe:/o:netgear:ex7500_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.72)
  • AND
  • cpe:/h:netgear:ex7500:-:*:*:*:*:*:*:*

    • Configuration 8:
  • cpe:/o:netgear:r6250_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.48)
  • AND
  • cpe:/h:netgear:r6250:-:*:*:*:*:*:*:*

    • Configuration 9:
  • cpe:/o:netgear:r6300_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.50)
  • AND
  • cpe:/h:netgear:r6300:v2:*:*:*:*:*:*:*

    • Configuration 10:
  • cpe:/o:netgear:r6400_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.68)
  • AND
  • cpe:/h:netgear:r6400:-:*:*:*:*:*:*:*

    • Configuration 11:
  • cpe:/o:netgear:r6400_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.102)
  • AND
  • cpe:/h:netgear:r6400:v2:*:*:*:*:*:*:*

    • Configuration 12:
  • cpe:/o:netgear:r6700_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.102)
  • AND
  • cpe:/h:netgear:r6700:v3:*:*:*:*:*:*:*

    • Configuration 13:
  • cpe:/o:netgear:r6900p_firmware:*:*:*:*:*:*:*:* (Version < 1.3.2.132)
  • AND
  • cpe:/h:netgear:r6900p:-:*:*:*:*:*:*:*

    • Configuration 14:
  • cpe:/o:netgear:r7000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.11.116)
  • AND
  • cpe:/h:netgear:r7000:-:*:*:*:*:*:*:*

    • Configuration 15:
  • cpe:/o:netgear:r7000p_firmware:*:*:*:*:*:*:*:* (Version < 1.3.2.132)
  • AND
  • cpe:/h:netgear:r7000p:-:*:*:*:*:*:*:*

    • Configuration 16:
  • cpe:/o:netgear:r7100lg_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.64)
  • AND
  • cpe:/h:netgear:r7100lg:-:*:*:*:*:*:*:*

    • Configuration 17:
  • cpe:/o:netgear:r7850_firmware:*:*:*:*:*:*:*:* (Version < 1.0.5.68)
  • AND
  • cpe:/h:netgear:r7850:-:*:*:*:*:*:*:*

    • Configuration 18:
  • cpe:/o:netgear:r7900_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.38)
  • AND
  • cpe:/h:netgear:r7900:-:*:*:*:*:*:*:*

    • Configuration 19:
  • cpe:/o:netgear:r7900p_firmware:*:*:*:*:*:*:*:* (Version < 1.4.1.68)
  • AND
  • cpe:/h:netgear:r7900p:-:*:*:*:*:*:*:*

    • Configuration 20:
  • cpe:/o:netgear:r7960p_firmware:*:*:*:*:*:*:*:* (Version < 1.4.1.68)
  • AND
  • cpe:/h:netgear:r7960p:-:*:*:*:*:*:*:*

    • Configuration 21:
  • cpe:/o:netgear:r8000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.68)
  • AND
  • cpe:/h:netgear:r8000:-:*:*:*:*:*:*:*

    • Configuration 22:
  • cpe:/o:netgear:r8000p_firmware:*:*:*:*:*:*:*:* (Version < 1.4.1.68)
  • AND
  • cpe:/h:netgear:r8000p:-:*:*:*:*:*:*:*

    • Configuration 23:
  • cpe:/o:netgear:r8300_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.144)
  • AND
  • cpe:/h:netgear:r8300:-:*:*:*:*:*:*:*

    • Configuration 24:
  • cpe:/o:netgear:r8500_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.144)
  • AND
  • cpe:/h:netgear:r8500:-:*:*:*:*:*:*:*

    • Configuration 25:
  • cpe:/o:netgear:rax200_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.88)
  • AND
  • cpe:/h:netgear:rax200:-:*:*:*:*:*:*:*

    • Configuration 26:
  • cpe:/o:netgear:rax75_firmware:*:*:*:*:*:*:*:* (Version < 1.0.3.102)
  • AND
  • cpe:/h:netgear:rax75:-:*:*:*:*:*:*:*

    • Configuration 27:
  • cpe:/o:netgear:rax80_firmware:*:*:*:*:*:*:*:* (Version < 1.0.3.102)
  • AND
  • cpe:/h:netgear:rax80:-:*:*:*:*:*:*:*

    • Configuration 28:
  • cpe:/o:netgear:rbr750_firmware:*:*:*:*:*:*:*:* (Version < 3.2.17.12)
  • AND
  • cpe:/h:netgear:rbr750:-:*:*:*:*:*:*:*

    • Configuration 29:
  • cpe:/o:netgear:rbr850_firmware:*:*:*:*:*:*:*:* (Version < 3.2.17.12)
  • AND
  • cpe:/h:netgear:rbr850:-:*:*:*:*:*:*:*

    • Configuration 30:
  • cpe:/o:netgear:rbs40v_firmware:*:*:*:*:*:*:*:* (Version < 2.6.2.4)
  • AND
  • cpe:/h:netgear:rbs40v:-:*:*:*:*:*:*:*

    • Configuration 31:
  • cpe:/o:netgear:rbs750_firmware:*:*:*:*:*:*:*:* (Version < 3.2.17.12)
  • AND
  • cpe:/h:netgear:rbs750:-:*:*:*:*:*:*:*

    • Configuration 32:
  • cpe:/o:netgear:rbs850_firmware:*:*:*:*:*:*:*:* (Version < 3.2.17.12)
  • AND
  • cpe:/h:netgear:rbs850:-:*:*:*:*:*:*:*

    • Configuration 33:
  • cpe:/o:netgear:rs400_firmware:*:*:*:*:*:*:*:* (Version <= 1.5.0.68)
  • AND
  • cpe:/h:netgear:rs400:-:*:*:*:*:*:*:*

    • Configuration 34:
  • cpe:/o:netgear:wndr3400_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.38)
  • AND
  • cpe:/h:netgear:wndr3400:v3:*:*:*:*:*:*:*

    • Configuration 35:
  • cpe:/o:netgear:wnr3500l_firmware:*:*:*:*:*:*:*:* (Version < 1.2.0.66)
  • AND
  • cpe:/h:netgear:wnr3500l:v2:*:*:*:*:*:*:*

    • Configuration 36:
  • cpe:/o:netgear:xr300_firmware:*:*:*:*:*:*:*:* (Version < 1.0.3.56)
  • AND
  • cpe:/h:netgear:xr300:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:netgear:r6400v2_firmware:1.0.4:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:r6700v3_firmware:1.0.4:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:r8300:-:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:ex7000_firmware:1.0.0:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:r8500:-:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:r6300v2_firmware:1.0.4:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:r6400_firmware:1.0.1:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:wndr3400v3_firmware:1.0.1:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:r8000_firmware:1.0.4:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:r7100lg_firmware:1.0.0:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:r7900p_firmware:1.4.1:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:d8500_firmware:1.0.3:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:r8000p_firmware:1.4.1:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:d6220_firmware:1.0.0:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:d6400_firmware:1.0.0:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:d7000v2_firmware:1.0.0:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:r6250_firmware:1.0.4:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:wnr3500lv2_firmware:1.2.0:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:xr300:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rbr750:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rbs850:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rbs750:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rbr850:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:r7000:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:r7850:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:r7900:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:r7960p:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rax200:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rax75:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rax80:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rs400:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:rbs40v:-:*:*:*:*:*:*:*
  • OR cpe:/h:netgear:ex7500:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    netgear d6220 firmware *
    netgear d6220 -
    netgear d6400 firmware *
    netgear d6400 -
    netgear d7000 firmware *
    netgear d7000 v2
    netgear d8500 firmware *
    netgear d8500 -
    netgear dc112a firmware *
    netgear dc112a -
    netgear ex7000 firmware *
    netgear ex7000 -
    netgear ex7500 firmware *
    netgear ex7500 -
    netgear r6250 firmware *
    netgear r6250 -
    netgear r6300 firmware *
    netgear r6300 v2
    netgear r6400 firmware *
    netgear r6400 -
    netgear r6400 firmware *
    netgear r6400 v2
    netgear r6700 firmware *
    netgear r6700 v3
    netgear r6900p firmware *
    netgear r6900p -
    netgear r7000 firmware *
    netgear r7000 -
    netgear r7000p firmware *
    netgear r7000p -
    netgear r7100lg firmware *
    netgear r7100lg -
    netgear r7850 firmware *
    netgear r7850 -
    netgear r7900 firmware *
    netgear r7900 -
    netgear r7900p firmware *
    netgear r7900p -
    netgear r7960p firmware *
    netgear r7960p -
    netgear r8000 firmware *
    netgear r8000 -
    netgear r8000p firmware *
    netgear r8000p -
    netgear r8300 firmware *
    netgear r8300 -
    netgear r8500 firmware *
    netgear r8500 -
    netgear rax200 firmware *
    netgear rax200 -
    netgear rax75 firmware *
    netgear rax75 -
    netgear rax80 firmware *
    netgear rax80 -
    netgear rbr750 firmware *
    netgear rbr750 -
    netgear rbr850 firmware *
    netgear rbr850 -
    netgear rbs40v firmware *
    netgear rbs40v -
    netgear rbs750 firmware *
    netgear rbs750 -
    netgear rbs850 firmware *
    netgear rbs850 -
    netgear rs400 firmware *
    netgear rs400 -
    netgear wndr3400 firmware *
    netgear wndr3400 v3
    netgear wnr3500l firmware *
    netgear wnr3500l v2
    netgear xr300 firmware *
    netgear xr300 -
    netgear r6400v2 firmware 1.0.4
    netgear r6700v3 firmware 1.0.4
    netgear r8300 -
    netgear ex7000 firmware 1.0.0
    netgear r8500 -
    netgear r6300v2 firmware 1.0.4
    netgear r6400 firmware 1.0.1
    netgear wndr3400v3 firmware 1.0.1
    netgear r8000 firmware 1.0.4
    netgear r7100lg firmware 1.0.0
    netgear r7900p firmware 1.4.1
    netgear d8500 firmware 1.0.3
    netgear r8000p firmware 1.4.1
    netgear d6220 firmware 1.0.0
    netgear d6400 firmware 1.0.0
    netgear d7000v2 firmware 1.0.0
    netgear r6250 firmware 1.0.4
    netgear wnr3500lv2 firmware 1.2.0
    netgear xr300 -
    netgear rbr750 -
    netgear rbs850 -
    netgear rbs750 -
    netgear rbr850 -
    netgear r7000 -
    netgear r7850 -
    netgear r7900 -
    netgear r7960p -
    netgear rax200 -
    netgear rax75 -
    netgear rax80 -
    netgear rs400 -
    netgear rbs40v -
    netgear ex7500 -