Headline
Ubuntu Security Notice USN-7061-1
Ubuntu Security Notice 7061-1 - Hunter Wittenborn discovered that Go incorrectly handled the sanitization of environment variables. An attacker could possibly use this issue to run arbitrary commands. Sohom Datta discovered that Go did not properly validate backticks as Javascript string delimiters, and did not escape them as expected. An attacker could possibly use this issue to inject arbitrary Javascript code into the Go template.
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Ubuntu Security Notice USN-7061-1
October 10, 2024
golang-1.17 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
Summary:
Several security issues were fixed in Go.
Software Description:
- golang-1.17: Go programming language compiler - metapackage
Details:
Hunter Wittenborn discovered that Go incorrectly handled the sanitization
of environment variables. An attacker could possibly use this issue to run
arbitrary commands. (CVE-2023-24531)
Sohom Datta discovered that Go did not properly validate backticks (`) as
Javascript string delimiters, and did not escape them as expected. An
attacker could possibly use this issue to inject arbitrary Javascript code
into the Go template. (CVE-2023-24538)
Juho Nurminen discovered that Go incorrectly handled certain special
characters in directory or file paths. An attacker could possibly use
this issue to inject code into the resulting binaries. (CVE-2023-29402)
Vincent Dehors discovered that Go incorrectly handled permission bits.
An attacker could possibly use this issue to read or write files with
elevated privileges. (CVE-2023-29403)
Juho Nurminen discovered that Go incorrectly handled certain crafted
arguments. An attacker could possibly use this issue to execute arbitrary
code at build time. (CVE-2023-29405)
It was discovered that Go incorrectly validated the contents of host
headers. A remote attacker could possibly use this issue to inject
additional headers or entire requests. (CVE-2023-29406)
Takeshi Kaneko discovered that Go did not properly handle comments and
special tags in the script context of html/template module. An attacker
could possibly use this issue to inject Javascript code and perform a
cross-site scripting attack. (CVE-2023-39318, CVE-2023-39319)
It was discovered that Go did not limit the number of simultaneously
executing handler goroutines in the net/http module. An attacker could
possibly use this issue to cause a panic resulting in a denial of service.
(CVE-2023-39325)
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. (CVE-2024-24785)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS
golang-1.17 1.17.13-3ubuntu1.2
golang-1.17-go 1.17.13-3ubuntu1.2
golang-1.17-src 1.17.13-3ubuntu1.2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-7061-1
CVE-2023-24531, CVE-2023-24538, CVE-2023-29402, CVE-2023-29403,
CVE-2023-29404, CVE-2023-29405, CVE-2023-29406, CVE-2023-39318,
CVE-2023-39319, CVE-2023-39325, CVE-2024-24785
Package Information:
https://launchpad.net/ubuntu/+source/golang-1.17/1.17.13-3ubuntu1.2
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An update for go-toolset-1.19 and go-toolset-1.19-golang is now available for Red Hat Developer Tools. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-29402: The go command may generate unexpected code at build time when using cgo. This may result in unexpected behavior when running a go program which uses cgo. This may occur when running an untrusted module which contains directories with newline characters in their names. Modules which are retrieved using the go comma...
An update for go-toolset-1.19 and go-toolset-1.19-golang is now available for Red Hat Developer Tools. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-29402: The go command may generate unexpected code at build time when using cgo. This may result in unexpected behavior when running a go program which uses cgo. This may occur when running an untrusted module which contains directories with newline characters in their names. Modules which are retrieved using the go comma...
An update for go-toolset-1.19 and go-toolset-1.19-golang is now available for Red Hat Developer Tools. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-29402: The go command may generate unexpected code at build time when using cgo. This may result in unexpected behavior when running a go program which uses cgo. This may occur when running an untrusted module which contains directories with newline characters in their names. Modules which are retrieved using the go comma...
On Unix platforms, the Go runtime does not behave differently when a binary is run with the setuid/setgid bits. This can be dangerous in certain cases, such as when dumping memory state, or assuming the status of standard i/o file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors closed, opening any files can result in unexpected content being read or written with elevated privileges. Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents of its registers.
On Unix platforms, the Go runtime does not behave differently when a binary is run with the setuid/setgid bits. This can be dangerous in certain cases, such as when dumping memory state, or assuming the status of standard i/o file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors closed, opening any files can result in unexpected content being read or written with elevated privileges. Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents of its registers.
The go command may execute arbitrary code at build time when using cgo. This may occur when running "go get" on a malicious module, or when running any other command which builds untrusted code. This is can by triggered by linker flags, specified via a "#cgo LDFLAGS" directive. Flags containing embedded spaces are mishandled, allowing disallowed flags to be smuggled through the LDFLAGS sanitization by including them in the argument of another flag. This only affects usage of the gccgo compiler.
On Unix platforms, the Go runtime does not behave differently when a binary is run with the setuid/setgid bits. This can be dangerous in certain cases, such as when dumping memory state, or assuming the status of standard i/o file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors closed, opening any files can result in unexpected content being read or written with elevated privileges. Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents of its registers.
The go command may execute arbitrary code at build time when using cgo. This may occur when running "go get" on a malicious module, or when running any other command which builds untrusted code. This is can by triggered by linker flags, specified via a "#cgo LDFLAGS" directive. The arguments for a number of flags which are non-optional are incorrectly considered optional, allowing disallowed flags to be smuggled through the LDFLAGS sanitization. This affects usage of both the gc and gccgo compilers.
On Unix platforms, the Go runtime does not behave differently when a binary is run with the setuid/setgid bits. This can be dangerous in certain cases, such as when dumping memory state, or assuming the status of standard i/o file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors closed, opening any files can result in unexpected content being read or written with elevated privileges. Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents of its registers.
Ubuntu Security Notice 6140-1 - It was discovered that Go did not properly manage memory under certain circumstances. An attacker could possibly use this issue to cause a panic resulting in a denial of service. This issue only affected golang-1.19 on Ubuntu 22.10. It was discovered that Go did not properly validate the amount of memory and disk files ReadForm can consume. An attacker could possibly use this issue to cause a panic resulting in a denial of service. This issue only affected golang-1.19 on Ubuntu 22.10.
Red Hat Security Advisory 2023-3445-01 - An update for etcd is now available for Red Hat OpenStack Platform 16.2 (Train). Issues addressed include a denial of service vulnerability.
Templates do not properly consider backticks (`) as Javascript string delimiters, and do not escape them as expected. Backticks are used, since ES6, for JS template literals. If a template contains a Go template action within a Javascript template literal, the contents of the action can be used to terminate the literal, injecting arbitrary Javascript code into the Go template. As ES6 template literals are rather complex, and themselves can do string interpolation, the decision was made to simply disallow Go template actions from being used inside of them (e.g. "var a = {{.}}"), since there is no obviously safe way to allow this behavior. This takes the same approach as github.com/google/safehtml. With fix, Template.Parse returns an Error when it encounters templates like this, with an ErrorCode of value 12. This ErrorCode is currently unexported, but will be exported in the release of Go 1.21. Users who rely on the previous behavior can re-enable it using the GODEBUG flag jstmpllitinte...