CVE-2020-22283
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of...
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
- Record
CVE-2020-22283- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-120
- Updated
- 2026-11-02
CVE List No score
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
- Record
CVE-2020-22283- Updated
- 2026-11-02
EUVDEUVD-2020-15048 No score
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
- Record
EUVD-2020-15048- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8gr9-6mc8-jj84
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of...
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
- Record
GHSA-8gr9-6mc8-jj84- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-120
- Updated
- 2026-11-02
OSV
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
- Record
CVE-2020-22283- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-22283
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
- Record
DEBIAN-CVE-2020-22283- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-22283
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
- Record
UBUNTU-CVE-2020-22283- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUSN-8423-1 No score
lwip vulnerabilities
It was discovered that lwIP contained a buffer overflow in the EAP authentication handling code. An attacker could possibly use this issue to trigger a buffer overflow, resulting in arbitrary code execution or a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-8597)
It was discovered that lwIP incorrectly handled certain ICMPv6 or 6LoWPAN packets. An attacker could possibly use this issue to trigger a buffer overflow, resulting in information disclosure. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-22283, CVE-2020-22284)
It was discovered that lwIP did not properly validate certain SNMPv3 authentication parameters. An attacker could possibly use this issue to trigger a stack-based buffer overflow, resulting in arbitrary code execution or a denial of service. (CVE-2026-8836)
- Record
USN-8423-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
lwipDebian:12 |
before 2.1.3+dfsg1-1 | 2.1.3+dfsg1-1 |
lwipDebian:13 |
before 2.1.3+dfsg1-1 | 2.1.3+dfsg1-1 |
lwipDebian:14 |
before 2.1.3+dfsg1-1 | 2.1.3+dfsg1-1 |
lwipDebian:10 |
before 2.0.3-3+deb10u2, plus listed versions 2.0.3-32.0.3-3+deb10u1 |
2.0.3-3+deb10u2 |
lwipUbuntu:Pro:20.04:LTS |
before 2.1.2+dfsg1-4ubuntu0.1~esm1, plus listed versions 2.1.2-32.1.2-5.12.1.2+dfsg1-12.1.2+dfsg1-4 |
2.1.2+dfsg1-4ubuntu0.1~esm1 |
lwipUbuntu:Pro:22.04:LTS |
before 2.1.3+dfsg1-1ubuntu0.1~esm1, plus listed versions 2.1.2+dfsg1-82.1.2+dfsg1-92.1.3+dfsg1-1 |
2.1.3+dfsg1-1ubuntu0.1~esm1 |
lwipUbuntu:Pro:24.04:LTS |
before 2.2.0+dfsg1-6.1ubuntu0.1~esm1, plus listed versions 2.1.3+dfsg1-22.1.3+dfsg1-42.2.0+dfsg1-22.2.0+dfsg1-32.2.0+dfsg1-4 Show 5 moreShow less2.2.0+dfsg1-52.2.0+dfsg1-62.2.0+dfsg1-6.12.2.0+dfsg1-6.1build12.2.0+dfsg1-6.1build2 |
2.2.0+dfsg1-6.1ubuntu0.1~esm1 |
lwipUbuntu:Pro:26.04:LTS |
before 2.2.1+dfsg1-4ubuntu0.1~esm1, plus listed versions 2.2.1+dfsg1-22.2.1+dfsg1-32.2.1+dfsg1-4 |
2.2.1+dfsg1-4ubuntu0.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-22283 is a high vulnerability (CVSS 7.5) in Lwip Project Lwip, published July 22, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.38%, the 72nd percentile. Fixed in lwip 2.1.3+dfsg1-1.