CVE-2021-23351

Katalog CVE

CVSS 4.9 · Medium EPSS 1,9%

Kerentanan pada go-proxyproto project go-proxyproto, fedoraproject fedora. Skor CVSS 3.1 4.9 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

8 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

4.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

EPSS (30 hari)

1,9% peluang dieksploitasi; lebih tinggi dari 78,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/pires/go-proxyproto/commit/7f48261db810703d173f27f3309a808cc2b49b8b patch · advisory pihak ketiga
• https://github.com/pires/go-proxyproto/pull/71 patch · advisory pihak ketiga
• https://github.com/pires/go-proxyproto/issues/69 advisory pihak ketiga
• https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPIRESGOPROXYPROTO-1081577 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BNVGJMVI3ZTZ...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C36IBVOZXRTWM...