CVE-2021-23351

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Summary

CVECVE-2021-23351
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-08 05:15:00 UTC
Updated2023-11-07 03:30:00 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 33 All All All
Operating System Fedoraproject Fedora 34 All All All
Application Go-proxyproto Project Go-proxyproto All All All All
Application Go-proxyproto Project Go-proxyproto All All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 33 Update: golang-github-pires-proxyproto-0.5.0-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
tests and fixes for issue #69 by isedev · Pull Request #71 · pires/go-proxyproto · GitHub MISC github.com Patch, Third Party Advisory
[SECURITY] Fedora 34 Update: golang-github-pires-proxyproto-0.5.0-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 34 Update: golang-github-pires-proxyproto-0.5.0-1.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
parseVersion1() is not secure · Issue #69 · pires/go-proxyproto · GitHub MISC github.com Third Party Advisory
Denial of Service (DoS) in github.com/pires/go-proxyproto | Snyk MISC snyk.io Third Party Advisory
[SECURITY] Fedora 33 Update: golang-github-pires-proxyproto-0.5.0-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Merge pull request #71 from isedev/feature/issue-69-tests · pires/go-proxyproto@7f48261 · GitHub MISC github.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Iestyn Elfick

Legacy QID Mappings

  • 180466 Debian Security Update for golang-github-pires-go-proxyproto (CVE-2021-23351)
  • 281518 Fedora Security Update for golang (FEDORA-2021-f5fcd9b0c1)
  • 281519 Fedora Security Update for golang (FEDORA-2021-e01c1fe4cc)
  • 982549 Go (go) Security Update for github.com/pires/go-proxyproto (GHSA-fqh4-rh59-xhvf)

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