Home/CVE/Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition that can lead to a net/http/httputil ReverseProxy panic
CVE

CVE-2021-36221

Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition that can lead to a net/http/httputil ReverseProxy panic

Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition that can lead to a net/http/httputil ReverseProxy panic upon an ErrAbortHandler abort.

MEDIUM · CVSS 5.9 EPSS 0.00231
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
▤

Affected Products & Versions

6
golang go< 1.15.15
golang go>= 1.16.0 and < 1.16.7
fedoraproject fedoraall versions
debian linuxall versions
oracle timesten in-memory database< 21.1.1.1.0
siemens scalance lpe9403 firmware< 2.0
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go stdlib fixed in 1.15.15, 1.16.7
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Aug 2021 · 06:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

28
suse-csafopenSUSE-SU-2024:10808-1
suse-csafopenSUSE-SU-2024:10809-1
rhsaRHSA-2022:7457Low
siemens-csafSSA-222547
rhsaRHSA-2022:4668Moderate
🔗

References & Sources

12
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdfPatchThird Party Advisory
https://groups.google.com/forum/#%21forum/golang-announce
https://groups.google.com/g/golang-announce/c/JvWG9FUUYT0Mailing ListThird Party Advisory
https://groups.google.com/g/golang-announce/c/uHACNfXAZqkMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00016.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00017.htmlMailing ListThird Party Advisory
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