Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2023-4039: An issue was found in a defense in depth feature of the GCC compiler on aarch64 platforms. The stack protector feature (-fstack-protector) did not detect or defend against overflows of dynamically-sized local variables. This update to the GCC compiler remedies code generation for this defense in depth feature, ensuring it is working as intended. Customers building their own binaries with GCC are advised to update their compiler, and to ensure they are enabling the defense in depth options available to them, such as the stack protector.
Fixed packages 28
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | cpp | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-base-debuginfo | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-c++ | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-debuginfo | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-gdb-plugin | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-gfortran | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-gnat | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-go | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-objc | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-objc++ | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | gcc-plugin-devel | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libatomic | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libcilkrts | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libgcc | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libgccjit | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libgccjit-devel | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libgfortran | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libgnat | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libgo | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libgomp | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libitm | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libmpx | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libobjc | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libquadmath | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libsanitizer | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libstdc++ | 0:7.3.1-17.amzn2 |
| Amazon Linux · 2 | libstdc++-docs | 0:7.3.1-17.amzn2 |
Vulnerabilities 1
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Medium 4.8
GCC's-fstack-protector fails to guard dynamically-sized local variables on AArch64
**DISPUTED**A failure in the -fstack-protector feature in GCC-based toolchains that target AArch64 allows an attacker to exploit an existing buffer overflow in dynamically-sized local variables in your application without this being detected. This stack-prote…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2023-4039.html