CVE-2023-41104: varnish-software varnish_enterprise

Vulnerability summary

CVE-2023-41104 is a medium (CVSS 6.5) vulnerability in varnish-software varnish_enterprise. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.4% of scored vulnerabilities.

Timeline

1. 23-08-2023
   PublishedVulnerability first disclosed.
2. 03-10-2024
   Last modifiedVulnerability information updated.

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.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.