Medium severity · published May 27, 2021
CVE-2021-31525
net/http in Go before 1.15.12 and 1.16.x before 1.16.4 allows remote attackers to cause a denial of service (panic) via a large header to ReadRequest or ReadResponse
5.9
CVSS
3.7%
EPSS
No
On KEV
Description
net/http in Go before 1.15.12 and 1.16.x before 1.16.4 allows remote attackers to cause a denial of service (panic) via a large header to ReadRequest or ReadResponse. Server, Transport, and Client can each be affected in some configurations.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.7% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
34 · source: NVD
GO
GO · Golang
before 1.15.12; 1.16.0 before 1.16.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31525
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31525
Issue Tracking
https://github.com/golang/go/issues/45710
Mailing List
https://groups.google.com/g/golang-announce/c/cu9SP4eSXMc
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ISRZZ6NY5R2TBYE72KZFOCO25TEUQTBF/
Third Party Advisory
https://security.gentoo.org/glsa/202208-02
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