CVE-2020-22283: lwip_project lwip Classic Buffer Overflow
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2020-22283DEBIAN-CVE-2020-22283DLA-3655-1
Published 22-07-2021Last modified 04-08-2024
Vulnerability summary
CVE-2020-22283 is a high (CVSS 7.5) Classic Buffer Overflow vulnerability in lwip_project lwip. EPSS estimates a 1.38% chance of exploitation in the next 30 days, higher than 71.8% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.38%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 22-07-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.38%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
0.00 pp
From 1.38% on 21-09-2026
21-09-202621-10-2026
EPSS score1.38%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- lwip< 2.1.3+dfsg1-1 | < 2.0.3-3+deb10u2
Lwip_project1 product
- lwipna
Ubuntu1 product
- lwip< 2.1.2+dfsg1-4ubuntu0.1~esm1
3 vendors · 3 products
