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, 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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
mitreCNA
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CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 40%
VendorProductVersion
varnish-softwarevarnish_enterprise
6.0.0 ≤
𝑥
< 6.0.11
varnish-softwarevarnish_enterprise
6.0.11
varnish-softwarevarnish_enterprise
6.0.11:r1
varnish-softwarevarnish_enterprise
6.0.11:r2
varnish-softwarevarnish_enterprise
6.0.11:r3
varnish-softwarevarnish_enterprise
6.0.11:r4
varnish-softwarevmod_digest
𝑥
< 1.0.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://docs.varnish-software.com/security/VSV00012/
https://github.com/varnish/libvmod-digest/releases/tag/libvmod-digest-1.0.3
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
https://www.varnish-cache.org/security/VSV00012.html