Amazon Linux 2 Security Advisory: ALAS-2023-2211
Advisory Release Date: 2023-08-17 11:58 Pacific
Advisory Updated Date: 2023-10-11 18:36 Pacific
2023-10-11: The severity level was changed from Important to Medium.
Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable. (CVE-2023-29409)
Affected Packages:
golang
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update golang to update your system.
aarch64:
golang-1.20.7-1.amzn2.0.1.aarch64
golang-bin-1.20.7-1.amzn2.0.1.aarch64
golang-shared-1.20.7-1.amzn2.0.1.aarch64
noarch:
golang-docs-1.20.7-1.amzn2.0.1.noarch
golang-misc-1.20.7-1.amzn2.0.1.noarch
golang-tests-1.20.7-1.amzn2.0.1.noarch
golang-src-1.20.7-1.amzn2.0.1.noarch
src:
golang-1.20.7-1.amzn2.0.1.src
x86_64:
golang-1.20.7-1.amzn2.0.1.x86_64
golang-bin-1.20.7-1.amzn2.0.1.x86_64
golang-shared-1.20.7-1.amzn2.0.1.x86_64