| id: GO-2022-0213 |
| modules: |
| - module: std |
| versions: |
| - fixed: 1.12.11 |
| - introduced: 1.13.0-0 |
| fixed: 1.13.2 |
| vulnerable_at: 1.13.1 |
| packages: |
| - package: crypto/dsa |
| symbols: |
| - Verify |
| skip_fix: 'TODO: revisit this reason (fix appears to not work with Go <1.18)' |
| summary: Panic on invalid DSA public keys in crypto/dsa |
| description: |- |
| Invalid DSA public keys can cause a panic in dsa.Verify. In particular, using |
| crypto/x509.Verify on a crafted X.509 certificate chain can lead to a panic, |
| even if the certificates don't chain to a trusted root. The chain can be |
| delivered via a crypto/tls connection to a client, or to a server that accepts |
| and verifies client certificates. net/http clients can be made to crash by an |
| HTTPS server, while net/http servers that accept client certificates will |
| recover the panic and are unaffected. |
| |
| Moreover, an application might crash invoking |
| crypto/x509.(*CertificateRequest).CheckSignature on an X.509 certificate |
| request, parsing a golang.org/x/crypto/openpgp Entity, or during a |
| golang.org/x/crypto/otr conversation. Finally, a golang.org/x/crypto/ssh client |
| can panic due to a malformed host key, while a server could panic if either |
| PublicKeyCallback accepts a malformed public key, or if IsUserAuthority accepts |
| a certificate with a malformed public key. |
| published: 2022-05-24T20:14:11Z |
| cves: |
| - CVE-2019-17596 |
| credits: |
| - Daniel M |
| - ragona |
| references: |
| - fix: https://go.dev/cl/205441 |
| - fix: https://go.googlesource.com/go/+/552987fdbf4c2bc9641016fd323c3ae5d3a0d9a3 |
| - report: https://go.dev/issue/34960 |
| - web: https://groups.google.com/g/golang-announce/c/lVEm7llp0w0/m/VbafyRkgCgAJ |
