Medium severity · published Aug 23, 2023
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…
6.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VE
Varnish Enterprise · Varnish-software
6.0.0 before 6.0.11; 6.0.11; 6.0.11; 6.0.11; 6.0.11; 6.0.11 · source: NVD
VD
Vmod Digest · Varnish-software
before 1.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-41104
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-41104
Mitigation
https://docs.varnish-software.com/security/VSV00012/
Release Notes
https://github.com/varnish/libvmod-digest/releases/tag/libvmod-digest-1.0.3
Patch
https://www.varnish-cache.org/security/VSV00012.html
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