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ZdiCVE-2020-10885

HistoryMar 25, 2020 - 9:15 p.m.

CVE-2020-10885

2020-03-2521:15:12

CWE-20

zdi

web.nvd.nist.gov

vulnerability

remote code execution

tp-link

archer a7

firmware

dns

zdi-can-9661

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.6

Confidence

High

EPSS

0.026

Percentile

90.4%

JSON

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. The issue results from the lack of proper validation of DNS reponses prior to further processing. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the root user. Was ZDI-CAN-9661.

Affected configurations

Nvd

Vulners

Node

tp-linkac1750_firmwareMatch190726

AND

tp-linkac1750Match-

VendorProductVersionCPE
tp-linkac1750_firmware190726cpe:2.3:o:tp-link:ac1750_firmware:190726:*:*:*:*:*:*:*
tp-linkac1750-cpe:2.3:h:tp-link:ac1750:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
tp-link	ac1750_firmware	190726	cpe:2.3:o:tp-link:ac1750_firmware:190726:::::::*
tp-link	ac1750	-	cpe:2.3:h:tp-link:ac1750:-:::::::*

CNA Affected

[
  {
    "product": "Archer A7",
    "vendor": "TP-Link",
    "versions": [
      {
        "status": "affected",
        "version": "Firmware Ver: 190726"
      }
    ]
  }
]

References

www.zerodayinitiative.com/advisories/ZDI-20-337/

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.6

Confidence

High

EPSS

0.026

Percentile

90.4%

JSON

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