QID 982549

QID 982549: Go (go) Security Update for github.com/pires/go-proxyproto (GHSA-fqh4-rh59-xhvf)

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.

Successful exploitation of this vulnerability may affect the confidentiality, integrity, and availability of the targeted user.

CVSS V3 rated as Medium - 4.9 severity.

CVSS V2 rated as Medium - 4 severity.

Solution

Customers are advised to refer to GHSA-fqh4-rh59-xhvf for updates pertaining to this vulnerability.

Vendor References

GHSA-fqh4-rh59-xhvf - github.com/advisories/GHSA-fqh4-rh59-xhvf

CVEs related to QID 982549

CVE-2021-23351 |

Software Advisories

Advisory ID	Software	Component	Link
GHSA-fqh4-rh59-xhvf	github.com/pires/go-proxyproto		github.com/advisories/GHSA-fqh4-rh59-xhvf

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