Medium severity · published Dec 8, 2022
CVE-2022-41717
An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests
5.3
CVSS
6.1%
EPSS
No
On KEV
Description
An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.1% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
37; 38 · source: NVD
GO
GO · Golang
before 1.18.9; 1.19.0 before 1.19.4 · source: NVD
HT
Http2 · Golang
before 0.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-41717
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-41717
Patch
https://go.dev/cl/455635
Patch
https://go.dev/cl/455717
Patch
https://go.dev/issue/56350
Mailing List
https://groups.google.com/g/golang-announce/c/L_3rmdT0BMU/m/yZDrXjIiBQAJ
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4BUK2ZIAGCULOOYDNH25JPU6JBES5NF2/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4SBIUECMLNC572P23DDOKJNKPJVX26SP/
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