Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2023-45284: path/filepath: recognize device names with trailing spaces and superscripts The IsLocal function did not correctly detect reserved names in some cases: - reserved names followed by spaces, such as "COM1 ". - "COM" or "LPT" followed by a superscript 1, 2, or 3. IsLocal now correctly reports these names as non-local. CVE-2023-45283: path/filepath: recognize \??\ as a Root Local Device path prefix. On Windows, a path beginning with \??\ is a Root Local Device path equivalent to a path beginning with \\?\. Paths with a \??\ prefix may be used to access arbitrary locations on the system. For example, the path \??\c:\x is equivalent to the more common path c:\x. The filepath package did not recognize paths with a \??\ prefix as special. Clean could convert a rooted path such as \a\..\??\b into the root local device path \??\b. It will now convert this path into .\??\b. IsAbs did not report paths beginning with \??\ as absolute. It now does so. VolumeName now reports the \??\ prefix as a volume name. Join(`\`, `??`, `b`) could convert a seemingly innocent sequence of path elements into the root local device path \??\b. It will now convert this to \.\??\b. CVE-2023-39326: A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small.
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | golang | 0:1.20.12-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-bin | 0:1.20.12-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-docs | 0:1.20.12-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-misc | 0:1.20.12-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-shared | 0:1.20.12-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-src | 0:1.20.12-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-tests | 0:1.20.12-1.amzn2023.0.1 |
Vulnerabilities 3
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Medium 5.3
Incorrect detection of reserved device names on Windows in path/filepath
On Windows, The IsLocal function does not correctly detect reserved device names in some cases. Reserved names followed by spaces, such as "COM1 ", and reserved names "COM" and "LPT" followed by superscript 1, 2, or 3, are incorrectly reported as local. With …
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Unscored —
Denial of service via chunk extensions in net/http
A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically rea…
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Unscored —
Insecure parsing of Windows paths with a \??\ prefix in path/filepath
The filepath package does not recognize paths with a \??\ prefix as special. On Windows, a path beginning with \??\ is a Root Local Device path equivalent to a path beginning with \\?\. Paths with a \??\ prefix may be used to access arbitrary locations on the…