Headline
Ubuntu Security Notice USN-6886-1
Ubuntu Security Notice 6886-1 - It was discovered that the Go net/http module did not properly handle the requests when request’s headers exceed MaxHeaderBytes. An attacker could possibly use this issue to cause a panic resulting into a denial of service. This issue only affected Go 1.21 in Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. It was discovered that the Go net/http module did not properly validate the subdomain match or exact match of the initial domain. An attacker could possibly use this issue to read sensitive information. This issue only affected Go 1.21 in Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
==========================================================================
Ubuntu Security Notice USN-6886-1
July 09, 2024
golang-1.21, golang-1.22 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in Go.
Software Description:
- golang-1.21: Go programming language compiler
- golang-1.22: Go programming language compiler
Details:
It was discovered that the Go net/http module did not properly handle the
requests when request’s headers exceed MaxHeaderBytes. An attacker could
possibly use this issue to cause a panic resulting into a denial of service.
This issue only affected Go 1.21 in Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2023-45288)
It was discovered that the Go net/http module did not properly validate the
subdomain match or exact match of the initial domain. An attacker could
possibly use this issue to read sensitive information. This issue only
affected Go 1.21 in Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-45289)
It was discovered that the Go net/http module did not properly validate the
total size of the parsed form when parsing a multipart form. An attacker
could possibly use this issue to cause a panic resulting into a denial of
service. This issue only affected Go 1.21 in Ubuntu 20.04 LTS and Ubuntu
22.04 LTS. (CVE-2023-45290)
It was discovered that the Go crypto/x509 module did not properly handle a
certificate chain which contains a certificate with an unknown public key
algorithm. An attacker could possibly use this issue to cause a panic
resulting into a denial of service. This issue only affected Go 1.21 in
Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2024-24783)
It was discovered that the Go net/mail module did not properly handle
comments within display names in the ParseAddressList function. An
attacker could possibly use this issue to cause a panic resulting into a
denial of service. This issue only affected Go 1.21 in Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2024-24784)
It was discovered that the Go html/template module did not validate errors
returned from MarshalJSON methods. An attacker could possibly use this
issue to inject arbitrary code into the Go template. This issue only
affected Go 1.21 in Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2024-24785)
It was discovered that the Go net module did not properly validate the DNS
message in response to a query. An attacker could possibly use this issue
to cause a panic resulting into a denial of service. This issue only
affected Go 1.22. (CVE-2024-24788)
It was discovered that the Go archive/zip module did not properly handle
certain types of invalid zip files differs from the behavior of most zip
implementations. An attacker could possibly use this issue to cause a panic
resulting into a denial of service. (CVE-2024-24789)
It was discovered that the Go net/netip module did not work as expected
for IPv4-mapped IPv6 addresses in various Is methods. An attacker could
possibly use this issue to cause a panic resulting into a denial of service.
(CVE-2024-24790)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
golang-1.21 1.21.9-1ubuntu0.1
golang-1.21-go 1.21.9-1ubuntu0.1
golang-1.21-src 1.21.9-1ubuntu0.1
golang-1.22 1.22.2-2ubuntu0.1
golang-1.22-go 1.22.2-2ubuntu0.1
golang-1.22-src 1.22.2-2ubuntu0.1
Ubuntu 22.04 LTS
golang-1.21 1.21.1-1~ubuntu22.04.3
golang-1.21-go 1.21.1-1~ubuntu22.04.3
golang-1.21-src 1.21.1-1~ubuntu22.04.3
golang-1.22 1.22.2-2~22.04.1
golang-1.22-go 1.22.2-2~22.04.1
golang-1.22-src 1.22.2-2~22.04.1
Ubuntu 20.04 LTS
golang-1.21 1.21.1-1~ubuntu20.04.3
golang-1.21-go 1.21.1-1~ubuntu20.04.3
golang-1.21-src 1.21.1-1~ubuntu20.04.3
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6886-1
CVE-2023-45288, CVE-2023-45289, CVE-2023-45290, CVE-2024-24783,
CVE-2024-24784, CVE-2024-24785, CVE-2024-24788, CVE-2024-24789,
CVE-2024-24790
Package Information:
https://launchpad.net/ubuntu/+source/golang-1.21/1.21.9-1ubuntu0.1
https://launchpad.net/ubuntu/+source/golang-1.22/1.22.2-2ubuntu0.1
https://launchpad.net/ubuntu/+source/golang-1.21/1.21.1-1~ubuntu22.04.3
https://launchpad.net/ubuntu/+source/golang-1.22/1.22.2-2~22.04.1
https://launchpad.net/ubuntu/+source/golang-1.21/1.21.1-1~ubuntu20.04.3
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An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.