CVE-2021-23351

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-23351
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23351.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-23351
Aliases
Related
Published
2021-03-08T05:15:12Z
Modified
2025-01-15T01:47:58.952642Z
Severity
  • 4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

The package github.com/pires/go-proxyproto before 0.5.0 are vulnerable to Denial of Service (DoS) via the parseVersion1() function. The reader in this package is a default bufio.Reader wrapping a net.Conn. It will read from the connection until it finds a newline. Since no limits are implemented in the code, a deliberately malformed V1 header could be used to exhaust memory in a server process using this code - and create a DoS. This can be exploited by sending a stream starting with PROXY and continuing to send data (which does not contain a newline) until the target stops acknowledging. The risk here is small, because only trusted sources should be allowed to send proxy protocol headers.

References

Affected packages

Debian:11 / golang-github-pires-go-proxyproto

Package

Name
golang-github-pires-go-proxyproto
Purl
pkg:deb/debian/golang-github-pires-go-proxyproto?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.4.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / golang-github-pires-go-proxyproto

Package

Name
golang-github-pires-go-proxyproto
Purl
pkg:deb/debian/golang-github-pires-go-proxyproto?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.4.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / golang-github-pires-go-proxyproto

Package

Name
golang-github-pires-go-proxyproto
Purl
pkg:deb/debian/golang-github-pires-go-proxyproto?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.4.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/pires/go-proxyproto

Affected ranges

Type
GIT
Repo
https://github.com/pires/go-proxyproto
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7f48261db810703d173f27f3309a808cc2b49b8b
Fixed
7f48261db810703d173f27f3309a808cc2b49b8b

Affected versions

0.*

0.1.0
0.1.1
0.1.2

v0.*

v0.1.3
v0.2.0
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.4.0
v0.4.1
v0.4.2