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.
References (3)
Core 3
Core References
Mitigation, Vendor Advisory
https://docs.varnish-software.com/security/VSV00012/
Patch, Vendor Advisory
https://www.varnish-cache.org/security/VSV00012.html
Scores
CVSS v3
6.5
EPSS
0.0049
EPSS Percentile
38.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-119
Status
published
Products (3)
varnish-software/varnish_enterprise
6.0.11 (5 CPE variants)
varnish-software/varnish_enterprise
6.0.0 - 6.0.11
varnish-software/vmod_digest
< 1.0.3
Published
Aug 23, 2023
Tracked Since
Feb 18, 2026