Medium severity · published Aug 2, 2021
CVE-2021-33197
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…
5.3
CVSS
2.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GO
GO · Golang
before 1.15.13; 1.16.0 before 1.16.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33197
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33197
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
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