CVE-2021-33197

low-risk
Published 2021-08-02

In Go before 1.15.13 and 1.16.x before 1.16.5, some configurations of ReverseProxy (from net/http/httputil) result in a situation where an attacker is able to drop arbitrary headers.

Do I need to act?

-
0.04% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Go

Affected Vendors

Golang

References (6)

Third Party Advisory https://groups.google.com/g/golang-announce
Exploit https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI
Third Party Advisory https://security.gentoo.org/glsa/202208-02
Third Party Advisory https://groups.google.com/g/golang-announce
Exploit https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI
Third Party Advisory https://security.gentoo.org/glsa/202208-02
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal