CVE-2021-23351 — Uncontrolled Resource Consumption

Vendor	Product	Version range	Fixed in
debian	golang-github-pires-go-proxyproto	< golang-github-pires-go-proxyproto 0.4.2-1 (bookworm)	golang-github-pires-go-proxyproto 0.4.2-1 (bookworm)
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—
github.com	pires_go-proxyproto	>= 0 < 0.5.0	0.5.0
github.com	pires_go-proxyproto	>= unspecified < 0.5.0	0.5.0
go-proxyproto_project	go-proxyproto	< 0.5.0	0.5.0

GHSA

github.com/pires/go-proxyproto denial of service vulnerability

ghsa·2021-05-18

CVE-2021-23351 [MEDIUM] CWE-400 github.com/pires/go-proxyproto denial of service vulnerability github.com/pires/go-proxyproto denial of service vulnerability 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.

OSV

github.com/pires/go-proxyproto denial of service vulnerability

osv·2021-05-18

CVE-2021-23351 [MEDIUM] github.com/pires/go-proxyproto denial of service vulnerability github.com/pires/go-proxyproto denial of service vulnerability 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.

OSV

CVE-2021-23351: The package github

osv·2021-03-08·CVSS 4.9

CVE-2021-23351 [MEDIUM] CVE-2021-23351: The package github 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.

Debian

CVE-2021-23351: golang-github-pires-go-proxyproto - The package github.com/pires/go-proxyproto before 0.5.0 are vulnerable to Denial...

vendor_debian·2021·CVSS 4.4

CVE-2021-23351 [MEDIUM] CVE-2021-23351: golang-github-pires-go-proxyproto - The package github.com/pires/go-proxyproto before 0.5.0 are vulnerable to Denial... 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. Scope: local bookworm: resolved (fixed in 0.4.2-1) bullseye: resolved (fixed in 0.4.2-1) forky: resol

CVE-2021-23351: 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…

Affected

CVSS provenance