CVE-2021-20048: Buffer Overflow
First published: Fri Jan 07 2022(Updated: )
A Stack-based buffer overflow in the SonicOS SessionID HTTP response header allows a remote authenticated attacker to cause Denial of Service (DoS) and potentially results in code execution in the firewall. This vulnerability affected SonicOS Gen 5, Gen 6 and Gen 7 firmware versions.
Credit: PSIRT@sonicwall.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SonicWALL SonicOS | <=7.0.1-r1456 | |
| SonicWall NSA 2650 | ||
| SonicWall NSA 2700 | ||
| SonicWall NSA 3650 Firmware | ||
| SonicWall NSA 3700 Firmware | ||
| SonicWall NSA 4650 Firmware | ||
| SonicWall NSA 4700 | ||
| SonicWall NSA 5650 | ||
| SonicWall NSA 6650 | ||
| SonicWall NSA 6700 Firmware | ||
| SonicWall NSA 9250 | ||
| SonicWall NSA 9450 | ||
| SonicWall NSA 9650 | ||
| SonicWall TZ270 | ||
| SonicWall TZ270W Firmware | ||
| SonicWall TZ300 Firmware | ||
| SonicWall TZ300P Firmware | ||
| SonicWall TZ300W Firmware | ||
| SonicWall TZ350 Firmware | ||
| SonicWall TZ350W Firmware | ||
| SonicWall TZ370 | ||
| SonicWall TZ370W Firmware | ||
| SonicWall TZ400W Firmware | ||
| SonicWall TZ400W Firmware | ||
| SonicWall TZ470 Firmware | ||
| SonicWall TZ470W Firmware | ||
| SonicWall TZ500W | ||
| SonicWall TZ500W Firmware | ||
| SonicWall TZ570 Firmware | ||
| SonicWall TZ570P Firmware | ||
| SonicWall TZ570W Firmware | ||
| SonicWall TZ600 | ||
| SonicWall TZ 600P | ||
| SonicWall TZ670 Firmware | ||
| SonicWALL SonicOS | <=7.0.1-5023-1349 | |
| SonicWall NSV 10 Firmware | ||
| SonicWall NSV 100 Firmware | ||
| SonicWall NSV 1600 | ||
| SonicWall NSv | ||
| SonicWall NSV 25 | ||
| SonicWall NSV 270 | ||
| SonicWall NSV 300 | ||
| SonicWall NSV 400 Firmware | ||
| SonicWall NSV 470 Firmware | ||
| SonicWall NSV 50 Firmware | ||
| SonicWall NSV800 | ||
| SonicWall NSv 870 | ||
| SonicWALL SonicOS | <=7.0.1-5018-r1715 | |
| SonicWall NSSP 12400 | ||
| SonicWall NSSP 12800 | ||
| SonicWall NSSP 13700 | ||
| SonicWall NSSP 15700 | ||
| SonicWALL SonicOS | <=6.5.4.8 | |
| SonicWall SOHO 250W | ||
| SonicWall SuperMassive 9200 | ||
| SonicWall SuperMassive 9400 | ||
| SonicWall SuperMassive 9600 | ||
| SonicWall SuperMassive 9800 | ||
| SonicWALL SonicOS | <=6.5.1.13-1n | |
| SonicWALL SonicOS | <=6.0.5.3-94o | |
| SonicWall SuperMassive E10200 | ||
| Sonicwall Supermassive E10400 | ||
| Sonicwall Supermassive E10800 | ||
| SonicWALL SonicOS | <=5.9.1.13 | |
| SonicWall SOHO 250W |
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Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-20048.
What is the severity of CVE-2021-20048?
The severity of CVE-2021-20048 is high with a CVSS score of 8.8.
Which SonicOS firmware versions are affected by CVE-2021-20048?
SonicOS Gen 5, Gen 6, and Gen 7 firmware versions are affected by CVE-2021-20048.
What is the impact of CVE-2021-20048?
CVE-2021-20048 allows a remote authenticated attacker to cause Denial of Service (DoS) and potentially results in code execution in the firewall.
Where can I find more information about CVE-2021-20048?
You can find more information about CVE-2021-20048 at the following link: [SonicWall PSIRT](https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0028).
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/author
- agent/severity
- agent/last-modified-date
- agent/weakness
- agent/description
- agent/event
- agent/first-publish-date
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/sonicwall
- canonical/sonicwall sonicos
- version/sonicwall sonicos/7.0.1-r1456
- canonical/sonicwall nsa 2650
- canonical/sonicwall nsa 2700
- canonical/sonicwall nsa 3650 firmware
- canonical/sonicwall nsa 3700 firmware
- canonical/sonicwall nsa 4650 firmware
- canonical/sonicwall nsa 4700
- canonical/sonicwall nsa 5650
- canonical/sonicwall nsa 6650
- canonical/sonicwall nsa 6700 firmware
- canonical/sonicwall nsa 9250
- canonical/sonicwall nsa 9450
- canonical/sonicwall nsa 9650
- canonical/sonicwall tz270
- canonical/sonicwall tz270w firmware
- canonical/sonicwall tz300 firmware
- canonical/sonicwall tz300p firmware
- canonical/sonicwall tz300w firmware
- canonical/sonicwall tz350 firmware
- canonical/sonicwall tz350w firmware
- canonical/sonicwall tz370
- canonical/sonicwall tz370w firmware
- canonical/sonicwall tz400w firmware
- canonical/sonicwall tz470 firmware
- canonical/sonicwall tz470w firmware
- canonical/sonicwall tz500w
- canonical/sonicwall tz500w firmware
- canonical/sonicwall tz570 firmware
- canonical/sonicwall tz570p firmware
- canonical/sonicwall tz570w firmware
- canonical/sonicwall tz600
- canonical/sonicwall tz 600p
- canonical/sonicwall tz670 firmware
- version/sonicwall sonicos/7.0.1-5023-1349
- canonical/sonicwall nsv 10 firmware
- canonical/sonicwall nsv 100 firmware
- canonical/sonicwall nsv 1600
- canonical/sonicwall nsv
- canonical/sonicwall nsv 25
- canonical/sonicwall nsv 270
- canonical/sonicwall nsv 300
- canonical/sonicwall nsv 400 firmware
- canonical/sonicwall nsv 470 firmware
- canonical/sonicwall nsv 50 firmware
- canonical/sonicwall nsv800
- canonical/sonicwall nsv 870
- version/sonicwall sonicos/7.0.1-5018-r1715
- canonical/sonicwall nssp 12400
- canonical/sonicwall nssp 12800
- canonical/sonicwall nssp 13700
- canonical/sonicwall nssp 15700
- version/sonicwall sonicos/6.5.4.8
- canonical/sonicwall soho 250w
- canonical/sonicwall supermassive 9200
- canonical/sonicwall supermassive 9400
- canonical/sonicwall supermassive 9600
- canonical/sonicwall supermassive 9800
- version/sonicwall sonicos/6.5.1.13-1n
- version/sonicwall sonicos/6.0.5.3-94o
- canonical/sonicwall supermassive e10200
- canonical/sonicwall supermassive e10400
- canonical/sonicwall supermassive e10800
- version/sonicwall sonicos/5.9.1.13