Medium: golang

Issue Overview:

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.

New Packages:

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  

Additional References

Red Hat: CVE-2023-29409

Mitre: CVE-2023-29409