Description
LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSL_get_verify_result is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libressl | 2.5.3-r1 | — |
| Alpine v3.23 | libressl | 2.5.3-r1 | — |
| Alpine v3.22 | libressl | 2.5.3-r1 | — |
| Alpine v3.21 | libressl | 2.5.3-r1 | — |
| Alpine v3.20 | libressl | 2.5.3-r1 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libressl | 2.5.3-r1 | — |
| Alpine v3.18 | libressl | 2.5.3-r1 | — |
| Alpine v3.17 | libressl | 2.5.3-r1 | — |
| Alpine v3.16 | libressl | 2.5.3-r1 | — |
| Alpine v3.15 | libressl | 2.5.3-r1 | — |
| Alpine v3.14 | libressl | 2.5.3-r1 | — |
| Alpine v3.13 | libressl | 2.5.3-r1 | — |
| Alpine v3.12 | libressl | 2.5.3-r1 | — |
| Alpine v3.11 | libressl | 2.5.3-r1 | — |
| Alpine v3.10 | libressl | 2.5.3-r1 | — |
| Alpine v3.9 | libressl | 2.5.3-r1 | — |
| Alpine v3.8 | libressl | 2.5.3-r1 | — |
| Alpine v3.7 | libressl | 2.5.3-r1 | — |
| Alpine v3.6 | libressl | 2.5.3-r1 | — |