Microsoft security update for CVE-2023-29409
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29409. This page also shows what EchelonGraph holds for CVE-2023-29409, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products7
- azl3 golang 1.20.7-1 on Azure Linux 3.0
- azl3 golang 1.27.0-1 on Azure Linux 3.0
- cbl2 golang 1.17.13-2 on CBL Mariner 2.0
- cbl2 golang 1.18.8-7 on CBL Mariner 2.0
- cbl2 golang 1.20.7-1 on CBL Mariner 2.0
- cbl2 golang 1.21.6-1 on CBL Mariner 2.0
- cbl2 msft-golang 1.20.7-1 on CBL Mariner 2.0
✅ Updates Microsoft lists: 4 updates
4 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.
| KB article | Update | Fixed build |
|---|---|---|
| — | Security Update | — |
| — | Security Update | — |
| — | Security Update | 1.21.6-1 |
| — | Security Update | 1.20.7-1 |
🧭 EchelonGraph on CVE-2023-29409
- EchelonGraph score
- 5.3 MEDIUM
- CISA KEV
- Not listed
- Fix status
- A fix is available — apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
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.
Published by Go Project, the CVE Numbering Authority that assigned CVE-2023-29409, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).